Vintage Gruen: The caliber database » Precision Caliber 90 / 91 / 92 / 93 (Gruen Watch Co.)

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Precision Caliber 90 / 91 / 92 / 93 (Gruen Watch Co.) [message #11290]

Mon, 07 October 2019 17:13

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

Based on the many discussions around cals 91-92-93 recently, wanted to share this example. Stamped as cal 92, seemingly cataloged as cal 93. Interesting setting mechanism.

Introduction date: 1911

Identification method: "92" stamped both on back of dial & between bridges. I also say caliber 93, as this appears to be an orphaned radium dial version of Strap model 12 (note hands vs Strap 11 shown with radium dial), which Master Book lists as caliber 93
Size: 11'"
Thickness: 4mm
Jewel marks: 17 Seventeen
Adj marks: Adjusted Temp
Other marks: movement # stamped on front plate & bridge, "Suisse" stamped on back plate near barrel bridge, "15078" stamped on back of dial (dial serial #??)
Example production date: 1923-1924, based on movement #

Dial feet locations: 1130 & 530 positions
Dial attachment means: side screws

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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, 24 September 2021 17:30]

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Re: Precision Caliber 90 / 91/ 92 / 93 (Gruen Watch Co.) [message #15575 is a reply to message #11290]

Fri, 24 September 2021 17:29

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

Adding the Caliber 90 / 91 (15J variant), this one with sub-seconds, circa 1912-13, American set, with the old style setting bits. Dial appears to possibly be Flückiger/Zelim Jacot, with number format matching Jenneke’s 756 posted today, but no ZJ stamp.

Any ideas what “Adjusted” means in this case?

Barney already showed 90-93 in the Sept 1911 filing. Next to it, Cal 47 ? Or perhaps the hunter version of Cal 89 (Caliber 88)?

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