Reference:3134: Difference between revisions

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==Production outline==

Auction catalogues date individual 3134 examples to the 1940s, circa 1945, the 1950s and 1957. ~~No source states~~ a production start or end for the reference.

Auction catalogues date individual 3134 examples to the 1940s, circa 1945, the 1950s and 1957. The catalogues do not state a production start or end for the reference.

~~These~~ dates ~~are catalogue~~ estimates, not a production window. Exclusive Timepieces dates case 168751 to 1957, while Anthony Traina's 2024 Hodinkee Bubbleback guide places the end of production in the mid-1950s. The sources do not resolve that difference.

Treat the dates as estimates for the individual watches; they do not define a production window. Exclusive Timepieces dates case 168751 to 1957, while Anthony Traina's 2024 Hodinkee Bubbleback guide places the end of production in the mid-1950s. The sources do not resolve that difference.

==Movement notes==

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Antiquorum Geneva's 1992 lot 181 describes a self-winding 9¾-ligne movement with 17 jewels, lever escapement, monometallic balance and a self-compensating Breguet balance spring. Exclusive Timepieces lot 227 also gives a 9¾-ligne automatic. Antiquorum's 2013 lot 143 records rhodium plating, a straight-line lever escapement and a Superbalance, but does not state the winding type or jewel count.

~~No documented~~ lot ~~names a~~ caliber number. The subsidiary-seconds ~~watches are consistent with~~ Cal. 620 or the shock-protected Cal. 635; centre-seconds ~~watches are consistent with~~ Cal. 630 or 645. ~~None of those fitments is confirmed by~~ a movement ~~photograph~~ or catalogue ~~description~~, ~~so the caliber remains unresolved~~.

The lot descriptions identify automatic movements but leave the caliber number unstated. The subsidiary-seconds examples may fit Cal. 620 or the shock-protected Cal. 635; the centre-seconds examples may fit Cal. 630 or 645. These remain candidates until a movement marking or catalogue record confirms an individual watch. See [[Reference:Movements#cal-620|Cal. 620]], [[Reference:Movements#cal-630|Cal. 630]], [[Reference:Movements#cal-635|Cal. 635]], and [[Reference:Movements#cal-645|Cal. 645]].

==Dial map==

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Rolex used slash suffixes on Bubbleback references to distinguish case metals. Colin A. White's ''The Vintage Rolex Field Manual'' documents the system and gives 1578/7 and 1578/8 as examples.

~~No cited source confirms a complete suffix~~-to~~-metal map for reference~~ 3134. The documented cases are steel and steel with yellow gold~~; the cited records contain no solid-gold example~~.

Colin A. White’s field manual gives 1578/7 and 1578/8 as examples of Bubbleback case-material suffixes. The sources reviewed here do not show how the same scheme applied to 3134. The directly documented 3134 cases are steel and steel with yellow gold.

==Auction record==

@@ Line 76: / Line 76: @@
 ==Production outline==
-Auction catalogues date individual 3134 examples to the 1940s, circa 1945, the 1950s and 1957. No source states a production start or end for the reference.
+Auction catalogues date individual 3134 examples to the 1940s, circa 1945, the 1950s and 1957. The catalogues do not state a production start or end for the reference.
-These dates are catalogue estimates, not a production window. Exclusive Timepieces dates case 168751 to 1957, while Anthony Traina's 2024 Hodinkee Bubbleback guide places the end of production in the mid-1950s. The sources do not resolve that difference.
+Treat the dates as estimates for the individual watches; they do not define a production window. Exclusive Timepieces dates case 168751 to 1957, while Anthony Traina's 2024 Hodinkee Bubbleback guide places the end of production in the mid-1950s. The sources do not resolve that difference.
 ==Movement notes==
@@ Line 84: / Line 84: @@
 Antiquorum Geneva's 1992 lot 181 describes a self-winding 9¾-ligne movement with 17 jewels, lever escapement, monometallic balance and a self-compensating Breguet balance spring. Exclusive Timepieces lot 227 also gives a 9¾-ligne automatic. Antiquorum's 2013 lot 143 records rhodium plating, a straight-line lever escapement and a Superbalance, but does not state the winding type or jewel count.
-No documented lot names a caliber number. The subsidiary-seconds watches are consistent with Cal. 620 or the shock-protected Cal. 635; centre-seconds watches are consistent with Cal. 630 or 645. None of those fitments is confirmed by a movement photograph or catalogue description, so the caliber remains unresolved.
+The lot descriptions identify automatic movements but leave the caliber number unstated. The subsidiary-seconds examples may fit Cal. 620 or the shock-protected Cal. 635; the centre-seconds examples may fit Cal. 630 or 645. These remain candidates until a movement marking or catalogue record confirms an individual watch. See [[Reference:Movements#cal-620|Cal. 620]], [[Reference:Movements#cal-630|Cal. 630]], [[Reference:Movements#cal-635|Cal. 635]], and [[Reference:Movements#cal-645|Cal. 645]].
 ==Dial map==
@@ Line 123: / Line 123: @@
 Rolex used slash suffixes on Bubbleback references to distinguish case metals. Colin A. White's ''The Vintage Rolex Field Manual'' documents the system and gives 1578/7 and 1578/8 as examples.
-No cited source confirms a complete suffix-to-metal map for reference 3134. The documented cases are steel and steel with yellow gold; the cited records contain no solid-gold example.
+Colin A. White’s field manual gives 1578/7 and 1578/8 as examples of Bubbleback case-material suffixes. The sources reviewed here do not show how the same scheme applied to 3134. The directly documented 3134 cases are steel and steel with yellow gold.
 ==Auction record==