Vintage Gruen
The forum for Gruen watch enthusiasts.
Home » The Gruen Model Database » The caliber database » The caliber 707 (Guild-era movement)
The caliber 707 [message #671] Sat, 15 June 2013 16:11 Go to next message
JackW is currently offline  JackW
Messages: 2120
Registered: May 2013
Location: Denver
Gruen Authority
Head Janitor
Site Admin
The caliber 707 is a 15 jewel movement and is 12-1/2 ligne or 28.4mm in diameter. The caliber 713 is a 7-jewel variant of this movement. Although these are commonly marked on the pillar plate with the caliber number, usually in the space between the escape wheel finger and the balance wheel, occasionally they are unmarked.
Photographs by MikeyT.
index.php?t=getfile&id=348&private=0
index.php?t=getfile&id=347&private=0

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

Report message to a moderator

Re: The caliber 707 [message #1031 is a reply to message #671] Thu, 11 July 2013 14:30 Go to previous message
C. Hurt is currently offline  C. Hurt
Messages: 243
Registered: May 2013
Gruen Guildsman
The 707 is based on the Lavina 28. The ebauche was used by several makers. I have a West End trench watch using this movement as well.

[Updated on: Sat, 05 July 2014 03:49]

Report message to a moderator

Previous Topic: The caliber 835
Next Topic: The caliber 330
Goto Forum:
  

[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Tue Jan 13 04:11:30 UTC 2026

Total time taken to generate the page: 0.00909 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.1.3.
Copyright ©2001-2023 FUDforum Bulletin Board Software