Vintage Gruen: The caliber database » Caliber 879

Home » The Gruen Model Database » The caliber database » Caliber 879 — Guild A (Aegler 17J 4.5L baguette (Rolex 170))

Show: Today's Messages :: Polls :: Message Navigator
E-mail to friend

Caliber 879 — Guild A [message #12719]

Sat, 27 June 2020 04:25

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

Switching gears from Favre at long last. This one seems to have come into the arsenal ca1930, building “new for 1931” models. The lowest sn I’ve seen is Dr. Ranfft’s example (1.939mm). Edit: I’ve now seen 879 with sn 1920828.

The below is about 17,000 Aegler numbers later than his, but now has a different patent stamp and a Conoruma hairspring. Edit: corrected my bad math, and note below is a movement that narrows the gap to within 5,400.

This one has a Stern 0.935 Sterling dial.

Not sure what “Size: M” is or what was stricken from the plate above it.

/vgforum/index.php?t=getfile&id=6447&private=0

/vgforum/index.php?t=getfile&id=6447&private=0

/vgforum/index.php?t=getfile&id=6445&private=0

/vgforum/index.php?t=getfile&id=6446&private=0

/vgforum/index.php?t=getfile&id=6444&private=0

Attachment: 14CB999D-9600-4563-96A0-73FEEE9CEAE2.jpeg
(Size: 1.10MB, Downloaded 1092 times)
Attachment: D1D00F8C-BF67-4CF4-A40A-1FB0C68EB238.jpeg
(Size: 1.16MB, Downloaded 1083 times)
Attachment: 87F926CB-9248-401B-A03B-35618CCC9A99.jpeg
(Size: 946.55KB, Downloaded 1094 times)
Attachment: D1E63899-88B4-4C14-A5C7-D9533848A6B8.jpeg
(Size: 1.35MB, Downloaded 1089 times)

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

[Updated on: Wed, 01 July 2020 19:22]

Report message to a moderator

[Message index]

		Caliber 879 — Guild A By: Case on Sat, 27 June 2020 04:25
		Re: Caliber 879 — Guild A By: thesnark17 on Sat, 27 June 2020 14:31
		Re: Caliber 879 — Guild A By: Case on Sun, 28 June 2020 03:06
		Re: Caliber 879 — Guild A By: Case on Tue, 30 June 2020 15:29
		Re: Caliber 879 — Guild A By: Case on Wed, 01 July 2020 06:01
		Re: Caliber 879 — Guild A By: Ephemerald on Wed, 01 July 2020 06:54
		Re: Caliber 879 — Guild A By: Case on Wed, 01 July 2020 20:49

Previous Topic:	Caliber 847 “Extra Precision” - 4.5L
Next Topic:	Caliber 719 (15J) - 6.5L x 11L Oval (ETA 425)

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Mon Apr 21 23:47:43 UTC 2025

Total time taken to generate the page: 0.02287 seconds