All about Gruen

[Fred]

I just want to bring up Gruen supplier Cattin in relation to a couple of these unknowns, he's showing a very similar movement in some of his ads, a 10 Ligne.

Good thought! I also remembered: 10X is 12 size per blue book, although it could be 10 size with a spacer to hit 12. It’s 21 jewel. +$50 vs VE in 1917 (that’s 70% higher movement retail cost!)

[Mr. Bieser]

Extra Precision tangent won't leave me alone...
Question, what is yr estimate of cal 35 production range in years?Not much past 1921 correct or?
Anyway as I said cal 35 not listed as EP in 21 and 26 but is listed later as EP.
Cal 50 while listed as EP in 21 and 26, doesn't show the "Extra" on the movement in those books which I thought interesting.
You once theorized your 21 jewel "caliber 35" *could* be a caliber 60, cal 60 is also listed as Extra Precision, does that fit?...just more thoughts.
We know 87 and 89 are.

[Fred]

I think production stopped in the mid 1910s, with remnants worked off over time. Just imo.

...You once theorized your 21 jewel "caliber 35" *could* be a caliber 60, cal 60 is also listed as Extra Precision, does that fit?...

I still think it is a cal 60. But I know no way to prove it out.

[Fred]

btw, lots of them shown here
[url]
https://mb.nawcc.org/threads/2-best-gru ... ns.118284/[/url]

[Mr. Bieser]

What about "Nr.1."? That's a biggie at 16s, correct? Is it Extra?