Reference:oyster-perpetual: Difference between revisions

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| [[Reference:6106|6106]] || Auction examples dated 1951 and circa 1952 || Antiquorum identifies Cal. 645; Monaco Legend uses A260, a size-family code shared with Cal. 645 || Steel 34 mm examples with several dial layouts, including a 3-6-9 dial described as Explorer-style. Production span and dial originality are not established

| [[Reference:6502|6502]] || Auction examples mostly dated to the 1950s; case 994893 has a circa-1964 auction date that conflicts with its circa-1954 serial-chart estimate || Cal. 1030 in auction catalogues and Watch-Wiki || No-date, gold Oyster Perpetual, 34–35 mm in catalogues. The article consolidates duplicate case 36675 and explains the disputed 6502/6603 attribution for case 36701

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| [[Reference:6556|6556]] || Auction catalogues report introduction in 1954; examples dated 1955–circa 1962 do not establish the production end || Cal. 1040; examined lots catalogue 26 jewels || Oyster Perpetual Tru-Beat; also called Metropolitan in some markets. Steel predominates in Antiquorum’s account; 18K gold examples are documented. One Phillips lot identifies the exterior as 6558 and the inner caseback as 6556; it does not establish a separate 6558 production reference. The U.S.-exclusive dial claim remains unverified

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 | [[Reference:6106|6106]] || Auction examples dated 1951 and circa 1952 || Antiquorum identifies Cal. 645; Monaco Legend uses A260, a size-family code shared with Cal. 645 || Steel 34 mm examples with several dial layouts, including a 3-6-9 dial described as Explorer-style. Production span and dial originality are not established
+| [[Reference:6502|6502]] || Auction examples mostly dated to the 1950s; case 994893 has a circa-1964 auction date that conflicts with its circa-1954 serial-chart estimate || Cal. 1030 in auction catalogues and Watch-Wiki || No-date, gold Oyster Perpetual, 34–35 mm in catalogues. The article consolidates duplicate case 36675 and explains the disputed 6502/6603 attribution for case 36701
 |-
 | [[Reference:6556|6556]] || Auction catalogues report introduction in 1954; examples dated 1955–circa 1962 do not establish the production end || Cal. 1040; examined lots catalogue 26 jewels || Oyster Perpetual Tru-Beat; also called Metropolitan in some markets. Steel predominates in Antiquorum’s account; 18K gold examples are documented. One Phillips lot identifies the exterior as 6558 and the inner caseback as 6556; it does not establish a separate 6558 production reference. The U.S.-exclusive dial claim remains unverified