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Re: Quadron 109 [message #11719 is a reply to message #11718] Wed, 27 November 2019 04:17 Go to previous messageGo to previous message
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Messages: 1178
Registered: May 2019
Location: Cincinnati
Gruen Authority
Well done, Jack. The lost wax casting undertaking is particularly impressive.

The earliest 123 I have recorded is from mid-1929, Gruen case # 1304645, right before the Gruen house case jump to 2mm, one of the first cases marked "movement adjusted in USA," although movement still marked "adjusted temps" (correction: it's not marked for adjustments at all--had to double check, after learning more below. It's sn 700430). Bridges already gold, as were all later ones I've seen.

It seems the 123 had low production, as I've never seen one with a sn higher than 707027, and that one is from at least late 1935 (stamped GXC). From 3 examples I have seen, 1929 serial #s were 700k. By end of 1930, the 123 was at sn 702k, now stamped "Unadj" in a "movement adjusted in USA" case. In 1934 cases, mid-706k. Seemingly fewer than 10k made from 1929-1935.


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

[Updated on: Thu, 28 November 2019 03:14]

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