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Home » The Gruen Model Database » The caliber database » Caliber 200 & 201 (Round, 8.75L, 15J & 16J Factory D & S)
Caliber 200 & 201 [message #14388] Wed, 20 January 2021 15:23 Go to next message
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Messages: 1178
Registered: May 2019
Location: Cincinnati
Gruen Authority
Size: 8 3/4 ligne
Jewels: 15 or 16 (#s only) - possibly cal 200 is 15j, cal 201 is 16j variant
Adjustments: 4 (#s only)
Configuration: hunter
Signed: Gruen W. Co. ("Factory D") or Gruen Guild ("Factory S")
-Factory D - TBD
-Factory S - Straub/Alpina
Example date: ~1919-1921
Serial number(s): front plate only
-Factory D: 38997
-Factory S: unobserved
Dial markings: unobserved


Other info: Re-posting Liz's Factory S "200" variant (with 16J) from previous forum threads. This began its life as an FHF ebauche, but it has a modified setting bridge and custom setting bits--so the usual FHF setting patent is not stamped on it. Noting it, as it explains why the setting bits shown in later movement catalogs (1939, etc.) are different: they reflect a modified/custom version of the "new" FHF setting works patented in late 1926. I doubt this caliber was actually in use past 1926, but Gruen was apparently still buying movements & parts to provide factory repairs.

[Updated on: Fri, 22 January 2021 20:29]

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Re: Caliber 200 & 201 [message #17303 is a reply to message #14388] Fri, 16 September 2022 18:38 Go to previous messageGo to next message
Messages: 1039
Registered: October 2018
Location: City of Lake Salt
Gruen Authority
Hi Case. I'm trying to understand calibre 200 a bit better & it's transitions, so I'm hoping you can help me.

Based off your post and the markings on this photo of 200 in 1926 parts supplement B here.


I'm thinking this must be a late production 200 below, correct?

Would you please be able to give me a more precise production date for this movement here?

I only have a window of 1922 to 1926....not sure how accurate that is.


Here is the dial side. I'm not including case data bc I it's likely a recase.


I guess my final thought or question is, what is the set in stone order of the full transitions of D version, S version, & G W Co version of 200?

Thank you!

Re: Caliber 200 & 201 [message #17381 is a reply to message #17303] Sun, 02 October 2022 18:12 Go to previous message
Messages: 2108
Registered: May 2013
Location: Left Coast
Gruen Authority

18K GF... that's a marking you normally do not see, so it's the same as 25 year guarantee, yippee!
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