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Re: Gruen 117-123 [message #3468 is a reply to message #3467] Tue, 01 April 2014 23:52 Go to previous messageGo to previous message
mikey is currently offline  mikey
Messages: 709
Registered: May 2013
Location: Paris, Ontario
Gruen Master
This info from the 1939 Material catalogue: #117, #119, #123: all movements have two different balance staffs, with .40 & .60 hairspring shoulders/ That info is repeated in the 1948 catalogue.

And this from the 1945 catalogue: #115, #1157, #117, #119 (40 & 60 collet) is interchangeable with the #123. That same info is shown in the 1945 supplement.


Still here....
 
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