Reference:1858 - Revision history

Admin: site-wide: layout classes (core-facts card, breadcrumb, entry-point cards)

2026-09-05T01:20:55Z

site-wide: layout classes (core-facts card, breadcrumb, entry-point cards)

← Older revision		Revision as of 01:20, 5 September 2026
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	[[File:Ref1858_black_gilt_dial.jpg\|thumb\|right\|250px\|alt=Black gilt 1858 dial\|Black gilt 1858 dial]]		[[File:Ref1858_black_gilt_dial.jpg\|thumb\|right\|250px\|alt=Black gilt 1858 dial\|Black gilt 1858 dial]]
	<small>[[Reference:bubbleback\|Bubbleback]] -> '''1858'''</small>		<small>[[Reference:bubbleback\|Bubbleback]] › '''1858'''</small>

	The 1858 is the first. Before it, Rolex's Perpetual rotor existed only in the 1931 patent filings and a handful of prototypes. After it, the Bubbleback dynasty runs for more than two decades and produces roughly 172 distinct reference variants: Cal. 520 giving way to 620 giving way to 630, Didactic engraved movements giving way to anonymous production watches, three-piece cases giving way to two-piece cases. The 1858 is where that lineage starts. It is also vanishingly rare at public auction: across more than twenty years of indexed records, only five ref 1858 lots have surfaced.		The 1858 is the first. Before it, Rolex's Perpetual rotor existed only in the 1931 patent filings and a handful of prototypes. After it, the Bubbleback dynasty runs for more than two decades and produces roughly 172 distinct reference variants: Cal. 520 giving way to 620 giving way to 630, Didactic engraved movements giving way to anonymous production watches, three-piece cases giving way to two-piece cases. The 1858 is where that lineage starts. It is also vanishingly rare at public auction: across more than twenty years of indexed records, only five ref 1858 lots have surfaced.
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	== Core facts ==		== Core facts ==

	{\| class="wikitable"		{\| class="wikitable rp-facts"
	\|-		\|-
	! detail		! detail

Admin: site-wide: domain move BezelBase → Rolexopedia (rolexopedia.net)

2026-09-05T00:36:59Z

site-wide: domain move BezelBase → Rolexopedia (rolexopedia.net)

← Older revision		Revision as of 00:36, 5 September 2026
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	{{DISPLAYTITLE:Rolex 1858 Bubbleback}}		{{DISPLAYTITLE:Rolex 1858 Bubbleback}}
	{{#seo:		{{#seo:
	\|title=Rolex Bubbleback 1858 (1933–1935) — Production & Dial Guide \| ~~BezelBase~~		\|title=Rolex Bubbleback 1858 (1933–1935) — Production & Dial Guide \| Rolexopedia
	\|description=The 1858 is the first. Before it, Rolex's Perpetual rotor existed only in the 1931 patent filings and a handful of prototypes. After it, the Bubbleback…		\|description=The 1858 is the first. Before it, Rolex's Perpetual rotor existed only in the 1931 patent filings and a handful of prototypes. After it, the Bubbleback…
	\|keywords=Rolex, 1858, Bubbleback, specifications, reference guide		\|keywords=Rolex, 1858, Bubbleback, specifications, reference guide

Admin: Rule #8: strip bold emphasis from dial-variant / case-number bullet labels

2026-08-08T21:44:39Z

Rule #8: strip bold emphasis from dial-variant / case-number bullet labels

← Older revision		Revision as of 21:44, 8 August 2026
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	Confirmed cases form a coherent range:		Confirmed cases form a coherent range:

	* ~~'''~~14224~~'''~~ (1933) — earliest confirmed 1858 serial from public auction (Mondani Collection)		* 14224 (1933) — earliest confirmed 1858 serial from public auction (Mondani Collection)
	* ~~'''~~29546~~'''~~ (1933) — earliest datable Bubbleback documented on VRF (also pre-dates the next Bucherer serial)		* 29546 (1933) — earliest datable Bubbleback documented on VRF (also pre-dates the next Bucherer serial)
	* ~~'''~~29562~~'''~~ (1933) — Glasgow hallmark Bucherer example cited in Dowling's ''Best of Time''		* 29562 (1933) — Glasgow hallmark Bucherer example cited in Dowling's ''Best of Time''
	* ~~'''~~48191~~'''~~ (c.1935) and ~~'''~~48449~~'''~~ (dated "1930s") — ~260 cases apart, plausibly same batch		* 48191 (c.1935) and 48449 (dated "1930s") — ~260 cases apart, plausibly same batch
	* ~~'''~~52736~~'''~~ (c.1935) — Phillips bow-tie		* 52736 (c.1935) — Phillips bow-tie
	* ~~'''~~58xxx~~'''~~ (1930s) — WatchNet Japan		* 58xxx (1930s) — WatchNet Japan

	Production span implied: case numbers from ~14000 to ~58000. In Rolex's mid-1930s serial schema, this corresponds roughly to 1933–1935, though the 1858 shared serial allocation with other references of the period. The case-29546 and case-29562 cluster near one another indicates at least two Glasgow-hallmarked 1933 examples survive; both trace through Bucherer retail. A pre-production 18K yellow gold prototype with factory "P" prefix (P5399, dated 1931) carries Didactic engravings on a pre-1858 base: physical evidence for 1858 engineering work beginning circa 1931.		Production span implied: case numbers from ~14000 to ~58000. In Rolex's mid-1930s serial schema, this corresponds roughly to 1933–1935, though the 1858 shared serial allocation with other references of the period. The case-29546 and case-29562 cluster near one another indicates at least two Glasgow-hallmarked 1933 examples survive; both trace through Bucherer retail. A pre-production 18K yellow gold prototype with factory "P" prefix (P5399, dated 1931) carries Didactic engravings on a pre-1858 base: physical evidence for 1858 engineering work beginning circa 1931.

Admin: Fix ligne-mark bold bug: replace ''' with ′′′ prime marks

2026-08-08T17:59:24Z

Fix ligne-mark bold bug: replace ''' with ′′′ prime marks

← Older revision		Revision as of 17:59, 8 August 2026
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	\|-		\|-
	\| movement		\| movement
	\| Cal. 520 (Hunter ~~8¾'''~~)		\| Cal. 520 (Hunter 8¾′′′)
	\|-		\|-
	\| dial		\| dial
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	== The Cal. 520 ==		== The Cal. 520 ==

	The Cal. 520 is a Hunter ~~8¾'''~~ movement from Aegler, derived from the 500-series manual-wind base (Cal. 500/510/530 share the same main plate family). Seventeen jewels standard; some premium Chronometer-graded examples carry nineteen. The escapement is a Swiss lever; the balance is screwed and adjusted in six positions; the hairspring is a blued Breguet overcoil. The rotor winds in one direction only; true bidirectional winding does not arrive in a Rolex movement until Cal. 1030 in 1950.		The Cal. 520 is a Hunter 8¾′′′ movement from Aegler, derived from the 500-series manual-wind base (Cal. 500/510/530 share the same main plate family). Seventeen jewels standard; some premium Chronometer-graded examples carry nineteen. The escapement is a Swiss lever; the balance is screwed and adjusted in six positions; the hairspring is a blued Breguet overcoil. The rotor winds in one direction only; true bidirectional winding does not arrive in a Rolex movement until Cal. 1030 in 1950.

	Dealer literature commonly calls the movement "Hunter 8¾ ligne" based on the dial-side dimension. Rolex parts books group it with 9¾-NA, using the parts-catalog sizing code for the 9¾L dial-side group. The movement blank is physically 9¾L; the 8¾ figure is the dial-side measurement used in sales contexts. Both are correct for different measurements of the same physical caliber.		Dealer literature commonly calls the movement "Hunter 8¾ ligne" based on the dial-side dimension. Rolex parts books group it with 9¾-NA, using the parts-catalog sizing code for the 9¾L dial-side group. The movement blank is physically 9¾L; the 8¾ figure is the dial-side measurement used in sales contexts. Both are correct for different measurements of the same physical caliber.
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	Bucherer co-signing is the most common retailer configuration on the reference. Both Antiquorum examples from 2006 and 2013 (cases 14224 and 48191) carry C. Bucherer retailer signatures, two of the five confirmed public auction lots. The Vintage & Prestige 9K yellow gold dealer listing was also Bucherer co-signed.		Bucherer co-signing is the most common retailer configuration on the reference. Both Antiquorum examples from 2006 and 2013 (cases 14224 and 48191) carry C. Bucherer retailer signatures, two of the five confirmed public auction lots. The Vintage & Prestige 9K yellow gold dealer listing was also Bucherer co-signed.

	A black gilt dial (glossy black with gold-toned text) appears on the Antiquorum Hong Kong 2021 example (case 48449). The Antiquorum catalog lists the caliber as ~~9¾'''~~ rather than the standard 8¾ Cal. 520, which may be a cataloging error or indicate a later-variant movement.		A black gilt dial (glossy black with gold-toned text) appears on the Antiquorum Hong Kong 2021 example (case 48449). The Antiquorum catalog lists the caliber as 9¾′′′ rather than the standard 8¾ Cal. 520, which may be a cataloging error or indicate a later-variant movement.

	No box-and-papers 1858 has ever appeared at public auction. The Phillips lot retained its original leather strap and SS Rolex buckle, but no period box surfaced. The Vintage & Prestige 9K gold listing had grandfather-to-grandson single-family provenance but no papers.		No box-and-papers 1858 has ever appeared at public auction. The Phillips lot retained its original leather strap and SS Rolex buckle, but no period box surfaced. The Vintage & Prestige 9K gold listing had grandfather-to-grandson single-family provenance but no papers.

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2026-08-04T00:19:36Z

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2026-08-04T00:11:07Z

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← Older revision		Revision as of 00:11, 4 August 2026
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	{{DISPLAYTITLE:Rolex 1858 Bubbleback}}		{{DISPLAYTITLE:Rolex 1858 Bubbleback}}
	{{#seo:		{{#seo:
	\|title=Rolex Bubbleback 1858 (1933–1935) — Production & Dial Guide \| BezelBase		\|title=Rolex Bubbleback 1858 (1933–1935) — Production & Dial Guide \| BezelBase
	\|description=The 1858 is the first. Before it, Rolex's Perpetual rotor existed only in the 1931 patent filings and a handful of prototypes. After it, the Bubbleback…		\|description=The 1858 is the first. Before it, Rolex's Perpetual rotor existed only in the 1931 patent filings and a handful of prototypes. After it, the Bubbleback…
	\|keywords=Rolex, 1858, Bubbleback, specifications, reference guide		\|keywords=Rolex, 1858, Bubbleback, specifications, reference guide
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	\|og_type=article		\|og_type=article
	\|published_time=2026-04-17T21:03:59Z		\|published_time=2026-04-17T21:03:59Z
	\|modified_time=2026-06-~~29T01~~:18:~~27Z~~		\|modified_time=2026-07-18T12:52:25Z
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Klaudiusz: Internal linking: related references + component links

2026-07-18T12:52:25Z

Internal linking: related references + component links

← Older revision		Revision as of 12:52, 18 July 2026
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	Price anchoring: the Mondani result at CHF 33,040 in 2006 and the Phillips bow-tie at CHF 15,120 in 2020 mark the top end for well-provenanced examples. The Antiquorum 2013 and Bolaffi 2020 results at CHF 1,875 and EUR 3,000 set the baseline for unsigned, plain-dial pieces. Market-current examples anchor somewhere in that range, with premiums stacking for Didactic engravings, retailer signature, or dial rarity.		Price anchoring: the Mondani result at CHF 33,040 in 2006 and the Phillips bow-tie at CHF 15,120 in 2020 mark the top end for well-provenanced examples. The Antiquorum 2013 and Bolaffi 2020 results at CHF 1,875 and EUR 3,000 set the baseline for unsigned, plain-dial pieces. Market-current examples anchor somewhere in that range, with premiums stacking for Didactic engravings, retailer signature, or dial rarity.


			== Related references ==

			* [[Reference:3458\|Bubbleback 3458]] — 1934–1948
			* [[Reference:3131\|Bubbleback 3131]] — 1936–1948
			* [[Reference:2764\|Bubbleback 2764]] — 1937–1948
			* [[Reference:3065\|Bubbleback 3065]] — 1937–1950
			* [[Reference:2940\|Bubbleback 2940]] — 1940–1949
			* [[Reference:3595\|Bubbleback 3595]] — 1941–1949

			See also the [[Reference:bubbleback\|Bubbleback family index]], [[Reference:Movements\|movement reference]], [[Reference:Bracelets\|bracelet & clasp guide]], and [[Reference:Serial-numbers\|serial numbers by year]].

	== Sources ==		== Sources ==

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2026-06-29T01:19:49Z

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	\|modified_time=2026-06-~~04T04~~:40:~~02Z~~		\|modified_time=2026-06-29T01:18:27Z
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2026-06-29T01:18:27Z

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← Older revision		Revision as of 01:18, 29 June 2026
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	{{DISPLAYTITLE:Rolex 1858 Bubbleback}}		{{DISPLAYTITLE:Rolex 1858 Bubbleback}}
	{{#seo:		{{#seo:
	\|title=Rolex 1858 ~~Bubbleback~~ — Production, Dial ~~Variants, Serial Ranges~~ \| BezelBase		\|title=Rolex Bubbleback 1858 (1933–1935) — Production & Dial Guide \| BezelBase
	\|description=The 1858 is the first. Before it, Rolex's Perpetual rotor existed only in the 1931 patent filings and a handful of prototypes. After it, the Bubbleback…		\|description=The 1858 is the first. Before it, Rolex's Perpetual rotor existed only in the 1931 patent filings and a handful of prototypes. After it, the Bubbleback…
	\|keywords=Rolex, 1858, Bubbleback, specifications, reference guide		\|keywords=Rolex, 1858, Bubbleback, specifications, reference guide
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	\|og_type=article		\|og_type=article
	\|published_time=2026-04-17T21:03:59Z		\|published_time=2026-04-17T21:03:59Z
	\|modified_time=2026-04-~~29T02~~:48:~~25Z~~		\|modified_time=2026-06-04T04:40:02Z
	\|robots=index,follow,max-image-preview:large		\|robots=index,follow,max-image-preview:large
	}}		}}

Admin: SEO: capitalize schema.org @type to "Article" for rich-result eligibility

2026-06-04T04:40:02Z

SEO: capitalize schema.org @type to "Article" for rich-result eligibility

← Older revision		Revision as of 04:40, 4 June 2026
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	\|image=Ref1858_black_gilt_dial.jpg		\|image=Ref1858_black_gilt_dial.jpg
	\|image_alt=Black gilt 1858 dial		\|image_alt=Black gilt 1858 dial
	\|type=~~article~~		\|type=Article
	\|og_type=article		\|og_type=article
	\|published_time=2026-04-17T21:03:59Z		\|published_time=2026-04-17T21:03:59Z