Reference:2784: Difference between revisions

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|-

| movement

| manual, 15 or 17 jewels; FHF 30 ~~/ Cal. 59~~ is a ~~family-level attribution, not confirmed by an original photographed~~ 2784 movement

| manual, 15 or 17 jewels; an FHF 30 family link is possible but unconfirmed on a 2784 movement

|-

| jewels

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==Movement notes==

Auction catalogues describe manual movements with 15 or 17 jewels~~. They do not identify a~~

Auction catalogues describe manual movements with 15 or 17 jewels but give no maker or caliber name. David Boettcher documents the 10½-ligne Fontainemelon FHF 30 in Oyster Watch Co. watches and identifies Cal. 59, with a centre-seconds 59(SC) version, as Tudor designations. Ref. 2784 auction records leave the caliber unassigned.

~~manufacturer~~ or caliber. David Boettcher ~~identifies the movement used in this Oyster Watch Co.~~

~~family as~~ the 10½-ligne Fontainemelon FHF 30~~, also designated~~ Cal. 59 ~~by Rolex and Tudor~~, with a

centre-seconds ~~version known as~~ 59(SC).

~~That~~ family attribution is plausible for ref. 2784 but not directly confirmed by the available

An FHF 30 family attribution is plausible for ref. 2784 but not directly confirmed by the available

movement photography. The only movement image tied to a case visibly stamped 2784 has a

Tudor-signed bridge and may be a replacement. The Centregraph and Raleigh records establish

Tudor-signed bridge and may be a replacement. The Centregraph and Raleigh records establish centre seconds; their catalogues leave the caliber unnamed. Both 15- and 17-jewel movements

centre seconds~~, but~~ their catalogues ~~do not name a~~ caliber. Both 15- and 17-jewel movements

remain documented; the reason for the split is unknown.

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</gallery>

The Centregraph ~~is mechanically different from~~ the subsidiary-seconds ~~watches~~. Christie's

The Centregraph has sweep centre seconds, unlike the subsidiary-seconds examples. Christie's

catalogued one with 17 jewels, an inner red 24-hour chapter ring ~~and sweep centre seconds. That~~

catalogued one with 17 jewels and an inner red 24-hour chapter ring but did not name its caliber.

~~layout is consistent with the Cal. 59(SC) family attribution,~~ but ~~Christie's does~~ not name ~~the~~ caliber.

The Solar Aqua does not appear in the ref. 2784 auction record. A Yorktime listing pairs the unsigned Solar Aqua dial with an inner caseback visibly stamped

@@ Line 51: / Line 51: @@
 |-
 | movement
-| manual, 15 or 17 jewels; FHF 30 / Cal. 59 is a family-level attribution, not confirmed by an original photographed 2784 movement
+| manual, 15 or 17 jewels; an FHF 30 family link is possible but unconfirmed on a 2784 movement
 |-
 | jewels
@@ Line 95: / Line 95: @@
 ==Movement notes==
-Auction catalogues describe manual movements with 15 or 17 jewels. They do not identify a
+Auction catalogues describe manual movements with 15 or 17 jewels but give no maker or caliber name. David Boettcher documents the 10½-ligne Fontainemelon FHF 30 in Oyster Watch Co. watches and identifies Cal. 59, with a centre-seconds 59(SC) version, as Tudor designations. Ref. 2784 auction records leave the caliber unassigned.
-manufacturer or caliber. David Boettcher identifies the movement used in this Oyster Watch Co.
-family as the 10½-ligne Fontainemelon FHF 30, also designated Cal. 59 by Rolex and Tudor, with a
-centre-seconds version known as 59(SC).
-That family attribution is plausible for ref. 2784 but not directly confirmed by the available
+An FHF 30 family attribution is plausible for ref. 2784 but not directly confirmed by the available
 movement photography. The only movement image tied to a case visibly stamped 2784 has a
-Tudor-signed bridge and may be a replacement. The Centregraph and Raleigh records establish
+Tudor-signed bridge and may be a replacement. The Centregraph and Raleigh records establish centre seconds; their catalogues leave the caliber unnamed. Both 15- and 17-jewel movements
-centre seconds, but their catalogues do not name a caliber. Both 15- and 17-jewel movements
 remain documented; the reason for the split is unknown.
@@ Line 187: / Line 183: @@
 </gallery>
-The Centregraph is mechanically different from the subsidiary-seconds watches. Christie's
+The Centregraph has sweep centre seconds, unlike the subsidiary-seconds examples. Christie's
-catalogued one with 17 jewels, an inner red 24-hour chapter ring and sweep centre seconds. That
+catalogued one with 17 jewels and an inner red 24-hour chapter ring but did not name its caliber.
-layout is consistent with the Cal. 59(SC) family attribution, but Christie's does not name the caliber.
 The Solar Aqua does not appear in the ref. 2784 auction record. A Yorktime listing pairs the unsigned Solar Aqua dial with an inner caseback visibly stamped