Vintage Gruen: The caliber database » Possible Caliber 60 (21J sister to Cal 35) - Madretsch

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Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J [message #13210 is a reply to message #13200]

Mon, 10 August 2020 00:40

thesnark17
Messages: 654
Registered: January 2017

Gruen Master

Caliber 35 can also be a 21 jewel OF. I have one. This is another, but it has several unusual characteristics:

- 457k. First non-V-series watch in that range, and first caliber 35 outside of the normal range. I wonder if these watches (atypical production in the early 45xk range) were an attempt to use up unfinished material. The rest of the oddities are probably related to when it was built.
- Marked G. W. Co. and nothing else. First time I've seen it.
- 21 jewels and marked. Surprising that it has 21 jewels in this time frame (the other atypicals are all 15/17 jewels). Other 21j cal 35s are not marked (but are earlier).
- Rare cap jewel style. Caliber 35 uses cap jewels in steel settings except on this movement. Probably was a 17j ebauche. But why convert to 21j?
- No chronometer balance or poised pallet fork. This is not surprising as neither one was used on the other atypical production movements.
- All Positions text, and location. Other atypical movements were 3 positions, or Adjusted only. Usually positions text is next to balance. This is a 21j movement; I guess it's adjusted better.
- Standard swan regulator. Caliber 35 normally uses a different regulator. Unsurprising for such late production.

Hi, everyone. I'm back. It was a nice vacation.

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[Message index]

		Possible Caliber 60 (21J sister to Cal 35) - Madretsch - 17’” Open Face By: Case on Sun, 09 August 2020 04:05
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Case on Sun, 09 August 2020 04:29
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Barney Green on Sun, 09 August 2020 10:42
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Jenneke on Sun, 09 August 2020 12:14
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Case on Sun, 09 August 2020 19:05
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: thesnark17 on Mon, 10 August 2020 00:40
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Case on Mon, 10 August 2020 01:19
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: thesnark17 on Mon, 10 August 2020 01:43
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Barney Green on Mon, 10 August 2020 10:08
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Case on Mon, 10 August 2020 13:46
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: thesnark17 on Mon, 10 August 2020 15:00
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Case on Mon, 10 August 2020 16:47
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: thesnark17 on Mon, 10 August 2020 18:49
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Case on Mon, 10 August 2020 19:22
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Case on Tue, 11 August 2020 01:24
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Jenneke on Tue, 11 August 2020 20:38
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Ephemerald on Tue, 11 August 2020 20:47
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: thesnark17 on Wed, 12 August 2020 20:36
		Re: Unknown Madretsch OF Caliber — 10 Size/17L — 21J By: Case on Thu, 13 August 2020 03:03

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