Reference:6538: Difference between revisions

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Production ran 1956 to 1959 across the auction-house consensus. Monochrome's Altieri (2017) writes "manufactured from 1955 until about 1959"; Wind Vintage gives "the latter part of the 1950s"; 41Watch reads "less than six years from 1955 to the end of 1959"; Bob's editorial reads ca. 1955 through ca. 1959. Phillips, Sotheby's, and Christie's lots cluster the launch in 1956. Capture the 1955 reading as the dealer-trade minority view; the auction-house consensus reads 1956–1959.

Total production is the noisiest gap. Blackbird Watch Manual (Biebuyck, December 2019) gives case-number ranges by series rather than a single total: First Series ~140,300–140,500 (~200 watches); Second Series ~158,100–158,400; Third Series 307,100–307,600 plus a 383,000 group; Fourth Series ~426,000–449,300. The four series add to roughly 1,500–2,000 examples — the strongest direct evidence in the ~~corpus~~. Aggregator dealer copy quotes "estimated 40,000 examples" with "barely 30%" surviving. The 40,000 figure is anomalously high vs every auction-house claim and almost certainly conflates broader serial-number range with reference-specific output. Both extremes deserve mention; the Blackbird four-series model is the better-grounded reading.

Total production is the noisiest gap. Blackbird Watch Manual (Biebuyck, December 2019) gives case-number ranges by series rather than a single total: First Series ~140,300–140,500 (~200 watches); Second Series ~158,100–158,400; Third Series 307,100–307,600 plus a 383,000 group; Fourth Series ~426,000–449,300. The four series add to roughly 1,500–2,000 examples — the strongest direct evidence in the auction record. Aggregator dealer copy quotes "estimated 40,000 examples" with "barely 30%" surviving. The 40,000 figure is anomalously high vs every auction-house claim and almost certainly conflates broader serial-number range with reference-specific output. Both extremes deserve mention; the Blackbird four-series model is the better-grounded reading.

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The 6538 runs caliber 1030 — Rolex's first bidirectional automatic, 25 jewels, 18,000 vph, ~42-hour reserve. The 1030 first appears on the 6098 in 1952 and runs across the no-crown-guard Submariner family (6536 / 6536-1 / 6538) into the early Explorer 6610 era. On the 6538, chronometer rating tracks the dial: only four-line "Officially Certified Chronometer" examples carried the chronometer regulation and Bureau Officiels Suisse de Contrôle (the Swiss official chronometer testing body, BO; later COSC) certification. The standard two-line dial is the same caliber without the chronometer pass. Wind Vintage notes the four-line examples underwent additional Rolex regulation and Swiss Government testing, earning a roughly 30% chronometer premium when new.

A second movement-architecture question crosses the early Submariner / Explorer corpus and is not yet resolved: the 6200 article reads its A296 as a bumper-style automatic, whereas recent external research on the 6150 reads A296 as a full-rotor self-winding caliber. Capture as a contradiction across the ~~corpus~~ rather than picking a truth in either direction; the resolution sits with Colin A. White's ''Vintage Rolex Field Manual''.

A second movement-architecture question crosses the early Submariner / Explorer corpus and is not yet resolved: the 6200 article reads its A296 as a bumper-style automatic, whereas recent external research on the 6150 reads A296 as a full-rotor self-winding caliber. Capture as a contradiction across the auction record rather than picking a truth in either direction; the resolution sits with Colin A. White's ''Vintage Rolex Field Manual''.

@@ Line 79: / Line 79: @@
 Production ran 1956 to 1959 across the auction-house consensus. Monochrome's Altieri (2017) writes "manufactured from 1955 until about 1959"; Wind Vintage gives "the latter part of the 1950s"; 41Watch reads "less than six years from 1955 to the end of 1959"; Bob's editorial reads ca. 1955 through ca. 1959. Phillips, Sotheby's, and Christie's lots cluster the launch in 1956. Capture the 1955 reading as the dealer-trade minority view; the auction-house consensus reads 1956–1959.
-Total production is the noisiest gap. Blackbird Watch Manual (Biebuyck, December 2019) gives case-number ranges by series rather than a single total: First Series ~140,300–140,500 (~200 watches); Second Series ~158,100–158,400; Third Series 307,100–307,600 plus a 383,000 group; Fourth Series ~426,000–449,300. The four series add to roughly 1,500–2,000 examples — the strongest direct evidence in the corpus. Aggregator dealer copy quotes "estimated 40,000 examples" with "barely 30%" surviving. The 40,000 figure is anomalously high vs every auction-house claim and almost certainly conflates broader serial-number range with reference-specific output. Both extremes deserve mention; the Blackbird four-series model is the better-grounded reading.
+Total production is the noisiest gap. Blackbird Watch Manual (Biebuyck, December 2019) gives case-number ranges by series rather than a single total: First Series ~140,300–140,500 (~200 watches); Second Series ~158,100–158,400; Third Series 307,100–307,600 plus a 383,000 group; Fourth Series ~426,000–449,300. The four series add to roughly 1,500–2,000 examples — the strongest direct evidence in the auction record. Aggregator dealer copy quotes "estimated 40,000 examples" with "barely 30%" surviving. The 40,000 figure is anomalously high vs every auction-house claim and almost certainly conflates broader serial-number range with reference-specific output. Both extremes deserve mention; the Blackbird four-series model is the better-grounded reading.
 <span id="movement-notes"></span>
@@ Line 86: / Line 86: @@
 The 6538 runs caliber 1030 — Rolex's first bidirectional automatic, 25 jewels, 18,000 vph, ~42-hour reserve. The 1030 first appears on the 6098 in 1952 and runs across the no-crown-guard Submariner family (6536 / 6536-1 / 6538) into the early Explorer 6610 era. On the 6538, chronometer rating tracks the dial: only four-line "Officially Certified Chronometer" examples carried the chronometer regulation and Bureau Officiels Suisse de Contrôle (the Swiss official chronometer testing body, BO; later COSC) certification. The standard two-line dial is the same caliber without the chronometer pass. Wind Vintage notes the four-line examples underwent additional Rolex regulation and Swiss Government testing, earning a roughly 30% chronometer premium when new.
-A second movement-architecture question crosses the early Submariner / Explorer corpus and is not yet resolved: the 6200 article reads its A296 as a bumper-style automatic, whereas recent external research on the 6150 reads A296 as a full-rotor self-winding caliber. Capture as a contradiction across the corpus rather than picking a truth in either direction; the resolution sits with Colin A. White's ''Vintage Rolex Field Manual''.
+A second movement-architecture question crosses the early Submariner / Explorer corpus and is not yet resolved: the 6200 article reads its A296 as a bumper-style automatic, whereas recent external research on the 6150 reads A296 as a full-rotor self-winding caliber. Capture as a contradiction across the auction record rather than picking a truth in either direction; the resolution sits with Colin A. White's ''Vintage Rolex Field Manual''.
 <span id="dial-map"></span>