Vintage Gruen
The forum for Gruen watch enthusiasts.
Home » The Gruen Model Database » The caliber database » Caliber 151 - (Extra) Precision - 5 1/2 '" (Favre)
Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12941 is a reply to message #12582] Sun, 26 July 2020 23:48 Go to previous messageGo to previous message
Case is currently offline  Case
Messages: 1178
Registered: May 2019
Location: Cincinnati
Gruen Authority
Back to the Extra Precision question: here’s a theory. The 151 is listed as 5.25L in the 1926 parts catalog. Fast forward to 1939, where it’s shown as “Extra Precision”, and it’s listed as 5.5L.

There was another 5.5L Extra Precision with the same layout as 151 in the 1926 book: the 840. For a limited time, you can view both sides of an 840 on sold item # 383608908018. I missed it while traveling.

You can also see the back side of one here on the forum.

Was the 151 a necked down evolution of the 840? Could be the bridge between Barney’s 18J ad for the 151 layout & the later “Extra Precision” notation.

My two caveats:
1) I'm wrong many times a day --just ask my wife!
2) Always seeking to learn more

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Caliber 96 (United Watch Co + Gruen Guarantee)
Next Topic: Caliber 812 - 10’” (also shown as 9 3/4’”) Aegler Rebberg Lepine (OF)
Goto Forum:
  

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

Current Time: Sat Oct 04 15:43:56 UTC 2025

Total time taken to generate the page: 0.03828 seconds
.:: Contact :: Home ::.

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