Reference:Serial-numbers: Difference between revisions

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For early [[Reference:prince|Prince]], [[Reference:bubbleback|Bubbleback]] and manual Oyster references such as [[Reference:3478|3478]], compare the case number with examples of the same reference and material. A chart covering later Oyster production may not describe an earlier case-number sequence. British hallmarks on precious-metal cases provide a separate assay date. Steel cases need other evidence.

A photographed [[Reference:1069|ref. 1069]] caseback carries 21,836 below the reference. The dealer dates it to the 1940s, while the serial reconstruction's first listed point is 23,969 for 1928. That comparison does not give 21,836 an exact year. ~~Collector Square's~~ archive also reproduces a Bonhams description for case 21,431 with a 1940s date; it is the same watch listed twice, not an independent dating sequence. Neither record supplies a British assay mark. [https://www.1stdibs.com/jewelry/watches/wrist-watches/rolex-nickel-silver-cushion-shaped-oyster-original-dial/id-j_18189072/ 1stDibs caseback photographs]; [https://www.collectorsquare.com/en/watches/rolex/oyster/ref-rolex-1069/lpi Bonhams entries]

A photographed [[Reference:1069|ref. 1069]] caseback carries 21,836 below the reference. The dealer dates it to the 1940s, while the serial reconstruction's first listed point is 23,969 for 1928. That comparison does not give 21,836 an exact year. An auction archive also reproduces a Bonhams description for case 21,431 with a 1940s date; it is the same watch listed twice, not an independent dating sequence. Neither record supplies a British assay mark. [https://www.1stdibs.com/jewelry/watches/wrist-watches/rolex-nickel-silver-cushion-shaped-oyster-original-dial/id-j_18189072/ 1stDibs caseback photographs]; [https://www.collectorsquare.com/en/watches/rolex/oyster/ref-rolex-1069/lpi Bonhams entries]

Christie's catalogues three circa-1940 [[Reference:3064|ref. 3064]] cases: 56'924, 269'204, and 282'453. These are catalogue associations with individual watches, not a serial-year chart or production boundary. The records are [https://www.christies.com/en/lot/lot-5758921 New York lot 63], [https://www.christies.com/zh/lot/lot-5674834 Geneva lot 341], and [https://www.christies.com/en/lot/lot-5790151 Geneva lot 240].

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 For early [[Reference:prince|Prince]], [[Reference:bubbleback|Bubbleback]] and manual Oyster references such as [[Reference:3478|3478]], compare the case number with examples of the same reference and material. A chart covering later Oyster production may not describe an earlier case-number sequence. British hallmarks on precious-metal cases provide a separate assay date. Steel cases need other evidence.
-A photographed [[Reference:1069|ref. 1069]] caseback carries 21,836 below the reference. The dealer dates it to the 1940s, while the serial reconstruction's first listed point is 23,969 for 1928. That comparison does not give 21,836 an exact year. Collector Square's archive also reproduces a Bonhams description for case 21,431 with a 1940s date; it is the same watch listed twice, not an independent dating sequence. Neither record supplies a British assay mark. [https://www.1stdibs.com/jewelry/watches/wrist-watches/rolex-nickel-silver-cushion-shaped-oyster-original-dial/id-j_18189072/ 1stDibs caseback photographs]; [https://www.collectorsquare.com/en/watches/rolex/oyster/ref-rolex-1069/lpi Bonhams entries]
+A photographed [[Reference:1069|ref. 1069]] caseback carries 21,836 below the reference. The dealer dates it to the 1940s, while the serial reconstruction's first listed point is 23,969 for 1928. That comparison does not give 21,836 an exact year. An auction archive also reproduces a Bonhams description for case 21,431 with a 1940s date; it is the same watch listed twice, not an independent dating sequence. Neither record supplies a British assay mark. [https://www.1stdibs.com/jewelry/watches/wrist-watches/rolex-nickel-silver-cushion-shaped-oyster-original-dial/id-j_18189072/ 1stDibs caseback photographs]; [https://www.collectorsquare.com/en/watches/rolex/oyster/ref-rolex-1069/lpi Bonhams entries]
 Christie's catalogues three circa-1940 [[Reference:3064|ref. 3064]] cases: 56'924, 269'204, and 282'453. These are catalogue associations with individual watches, not a serial-year chart or production boundary. The records are [https://www.christies.com/en/lot/lot-5758921 New York lot 63], [https://www.christies.com/zh/lot/lot-5674834 Geneva lot 341], and [https://www.christies.com/en/lot/lot-5790151 Geneva lot 240].