Vintage Gruen: 1910's and prior

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Re: Wristlet ??? [message #432 is a reply to message #410]

Fri, 31 May 2013 17:50

Thojil
Messages: 650
Registered: May 2013
Location: Concorès, France

Gruen Master

I'm stranded in Frankfurt airport for 5 hours waiting for my connecting flight to Geneva Sad

So to make good use of otherwise lost time I did some more digging into this factory letter mystery.

I looked again at all the companies that were part of the Union Horlogère in the period that Gruen was also a member of this joint venture and found the movement manufacturer Robert Frères, Villeret (from 1929 Minerva SA).

Given the letter logic for all the other confirmed movement suppliers, I'm pretty confident that we can assume that "Factory R" is Robert Frères, Villeret.

I recall that Robert Frères was previously suggested for "Factory D" however your movement find makes this assumption less likely to me now. There was however an ebauche manufacturer called "Duret & Colonnaz, Geneve" that was also a member of the Union Horlogère. Maybe this company is "Factory D"?

[Updated on: Fri, 31 May 2013 18:04]

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[Message index]

		Wristlet ??? By: Jenneke on Tue, 28 May 2013 21:20
		Re: Wristlet ??? By: Thojil on Thu, 30 May 2013 09:36
		Re: Wristlet ??? By: C. Hurt on Thu, 30 May 2013 13:58
		Re: Wristlet ??? By: JackW on Thu, 30 May 2013 14:43
		Re: Wristlet ??? By: Thojil on Thu, 30 May 2013 14:44
		Re: Wristlet ??? By: Jenneke on Thu, 30 May 2013 18:21
		Re: Wristlet ??? By: JackW on Thu, 30 May 2013 18:33
		Re: Wristlet ??? By: Thojil on Fri, 31 May 2013 17:50
		Re: Wristlet ??? By: JackW on Fri, 31 May 2013 18:02
		Re: Wristlet ??? By: Bazzab on Fri, 31 May 2013 20:23
		Re: Wristlet ??? By: JackW on Fri, 31 May 2013 20:39
		Re: Wristlet ??? By: Jenneke on Sat, 01 June 2013 09:12
		Re: Wristlet ??? By: Jenneke on Tue, 01 October 2013 19:13
		Re: Wristlet ??? By: Thojil on Tue, 01 October 2013 20:56
		Re: Wristlet ??? By: Jenneke on Fri, 29 November 2013 23:04

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