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Re: Circa 1926 Swiss-Cased 14k Green Men's Tank [message #15444 is a reply to message #15443] Fri, 10 September 2021 01:39 Go to previous messageGo to previous message
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Messages: 1178
Registered: May 2019
Location: Cincinnati
Gruen Authority
Wow, Jenneke, great find! I was actually going to propose earlier, like 1923. But the source (ad?) & engraving are so close in time. Very cool!

It’s a stunning watch! A few thoughts:
This is a caliber 997, which was always stamped 98. I was going with 1923 model because it isn’t in the master book, but it does have 1922 stamps. 1920-21 997s are all “4 adjusts.” Never seen a 1922 stamps one with anything but “temp.” But that’s not much to go on without seeing the movement number behind the dial. Would match 1925 too.

The 1670 details a 15j version (assuming caliber 99), so yours is a higher grade. Perhaps the highest? I know some of the 997 models could be upgraded to an 18j “extra precision”, at least until 1923.

I don’t know the nomenclature. Perhaps an overlap from the old nomenclature? Some of the newer models in 1917 & 1918 were 4 numbers (“C1340LG”)

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