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Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants [message #12117]

Fri, 07 February 2020 05:20

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

Size: 17L
Jewels: originally 17J, later 19J
Config: open face
Negative setting mechanism
Dial release: side screws
Dial holes: 1 & 6 positions
Maker: unknown (same maker as 750 semi-thin series)
Adjustments: 5

Here is one of the later Guild 19J variants. Stamped 740. Circa 1922. Sn 1104688. Silver dial by Zelim Jacot

Note that the 750 series semis follow this front plate number series—but a back plate sn appears on them by 1121000 (front plate). BUT the back plate # is a different series, not a shortened version of the front plate #. For example, the 758 with front plate # 1121471 bears # 16740 on the back (bridges).

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My two caveats:
1) I'm wrong many times a day --just ask my wife!
2) Always seeking to learn more

[Updated on: Fri, 07 February 2020 05:39]

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[Message index]

		Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Fri, 07 February 2020 05:20
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Fri, 07 February 2020 05:44
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Barney Green on Fri, 07 February 2020 16:49
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Fri, 07 February 2020 21:46
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Barney Green on Fri, 07 February 2020 22:51
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Sat, 08 February 2020 11:14
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Barney Green on Sat, 08 February 2020 15:05
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: thesnark17 on Sat, 08 February 2020 17:29
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Barney Green on Sat, 08 February 2020 17:48
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Sun, 09 February 2020 05:05
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: thesnark17 on Sun, 09 February 2020 15:18

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