Vintage Gruen: The caliber database » 18J Extra Precision Oval (Unknown)

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18J Extra Precision Oval (Unknown) [message #12778]

Mon, 06 July 2020 00:57

C. Hurt
Messages: 243
Registered: May 2013

Gruen Guildsman

Could this be Favre’s no. 15? Doesn’t seem to appear in the 1926 catalog.

/vgforum/index.php?t=getfile&id=6500&private=0

Attachment: 76DCB232-003D-4D67-8911-2B777B4B26B8.jpeg
(Size: 169.49KB, Downloaded 1451 times)

[Updated on: Mon, 05 April 2021 16:12] by Moderator

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12780 is a reply to message #12778]

Mon, 06 July 2020 02:30

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

Wow, Cary, now there’s a deep cut from the archives! Certainly looks the part of a smaller-size Favre 15. What a cabochon! It’s a miracle the stem is still intact.

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

[Updated on: Mon, 06 July 2020 02:31]

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12783 is a reply to message #12780]

Mon, 06 July 2020 08:58

Barney Green
Messages: 1755
Registered: February 2014
Location: Wolfsburg, Germany

Gruen Authority

For sure not the Favre 15, but definitely one which I have never seen before. This needs a further investigation, any idea which caliber number this could be?

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

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12784 is a reply to message #12783]

Mon, 06 July 2020 13:45

thesnark17
Messages: 654
Registered: January 2017

Gruen Master

One thing I can say - that serial number lines it up with the Dietrich Gruen labeled pocket watches. The early 19j Ultra-Thin, Up/Down, Minute Repeater, and Minute Repeater Chronograph are all in the SN range 41k-42k.

So my first thought is to look up the maker for those watches.

[Updated on: Mon, 06 July 2020 13:46]

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12785 is a reply to message #12784]

Mon, 06 July 2020 14:13

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

The main bridge layout is also similar to the Solvil ovals, but never seen one that small. Would be good to see front plate.

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

[Updated on: Mon, 06 July 2020 14:14]

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12787 is a reply to message #12785]

Mon, 06 July 2020 19:14

Gary
Messages: 2174
Registered: May 2013
Location: Seattle

Gruen Authority
Cheerleader

Since we are talking Agassiz and ovals, I'll throw this one in.

/vgforum/index.php?t=getfile&id=6503&private=0

Attachment: Agassiz Oval.jpg
(Size: 117.27KB, Downloaded 1395 times)

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12788 is a reply to message #12787]

Mon, 06 July 2020 19:32

Barney Green
Messages: 1755
Registered: February 2014
Location: Wolfsburg, Germany

Gruen Authority

Not quite sure if all these movements should be shown in the cal 151 thread...

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

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12789 is a reply to message #12784]

Mon, 06 July 2020 19:47

Ephemerald
Messages: 1039
Registered: October 2018
Location: City of Lake Salt

Gruen Authority

Closest sn I could find to Carys oval is 42378.

/vgforum/index.php?t=getfile&id=6504&private=0

Attachment: SN42378.jpg
(Size: 593.92KB, Downloaded 1266 times)

Matthias

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12790 is a reply to message #12789]

Mon, 06 July 2020 20:55

thesnark17
Messages: 654
Registered: January 2017

Gruen Master

Closer than me by two...

Nearest two:
42340 - UT 19 jewels, Gruen house case 1036561

42380 - DG MR SS 41 jewels, Gruen case 42380

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12795 is a reply to message #12790]

Tue, 07 July 2020 01:26

C. Hurt
Messages: 243
Registered: May 2013

Gruen Guildsman

Here’s the dial side.
/vgforum/index.php?t=getfile&id=6519&private=0

Sorry to have hijacked a thread. I can start a new topic if need be, or if the moderators wish to split things up, please go ahead.

Attachment: F62497F5-7416-40C0-934D-708B433F8CEA.jpeg
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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12796 is a reply to message #12795]

Tue, 07 July 2020 13:06

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

I note a second serial number on the front plate, in addition to one that matches Gruen’s. Any chance of confirming?

I do wish we could peel off the 89 and this mystery caliber into separate threads.

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

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12805 is a reply to message #12796]

Wed, 08 July 2020 14:51

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

There was another labeled factory in this 42k Serial Number range in this time: Factory L. See the front plate of the 849 posted in the caliber database.

Cary--can you please confirm the dimensions of this oval movement? We'll peel it off into its own thread.

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

[Updated on: Wed, 08 July 2020 14:51]

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Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12820 is a reply to message #12805]

Thu, 09 July 2020 16:23

C. Hurt
Messages: 243
Registered: May 2013

Gruen Guildsman

The second number stamped underneath the dial is 13694, as best I can tell. That stamping is very faint and may have been polished over.

Dimensions are 18.6mm x 12.65mm.

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Re: 18J Extra Precision Oval (Unknown) [message #14720 is a reply to message #12778]

Mon, 05 April 2021 16:19

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

I split Cary's mystery EP oval into its own thread.

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