Vintage Gruen: The caliber database

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The caliber 266 [message #1769]

Sat, 05 October 2013 00:15

Gary
Messages: 2114
Registered: May 2013
Location: Left Coast

Gruen Authority
Cheerleader

This unknown caliber is a 15 jewel, 10.5 ligne movement. Not a lot is known about these movements and even more of a mystery is the factory "T" marking.

Bazzab started an identification thread on the vintage forums awhile back. A Gruen dissecting team was formed, Bazzab and I dissected both of our movements.

http://vintagewatchforums.com/viewtopic.php?f=33&t=2658

The only conclusion is the movement is a Fabrique d'Horlogerie de Fontainemelon make.

index.php?t=getfile&id=725&private=0

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[Updated on: Sun, 06 October 2013 20:49]

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Re: The caliber unknown (Factory "T") [message #1770 is a reply to message #1769]

Sat, 05 October 2013 02:07

JackW
Messages: 1931
Registered: May 2013
Location: Denver

Gruen Authority
Head Janitor
Site Admin

It is potentially a cal 266 which is a 10.5''' size movement. Setting bridge/works are a close match: link

All I know is based on hard work & writing by others. I can only aspire to augment this body of knowledge. If I am wrong it is because of my own failings. -me

"If I have seen farther it is by standing on the shoulders of giants." - Newton

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Re: The caliber unknown (Factory "T") [message #1785 is a reply to message #1770]

Sun, 06 October 2013 20:50

Gary
Messages: 2114
Registered: May 2013
Location: Left Coast

Gruen Authority
Cheerleader

Agree. I changed the subject line.

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Re: The caliber unknown (Factory "T") [message #11480 is a reply to message #1785]

Mon, 21 October 2019 17:45

Barney Green
Messages: 1747
Registered: February 2014
Location: Wolfsburg, Germany

Gruen Authority

Yes, same setting as caliber 610, both are based on the same FHF base ebauche design which Ranfft calls FHF 1144 10.5'''.
The new bridge layout was radically changing the look so it was newly protected in November 1923.

Gruen, Gruen, Gruen ist alles was ich habe... Gruen, Gruen, Gruen is all I have...(German folklore song)

[Updated on: Mon, 21 October 2019 18:14]

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