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Home » The Gruen Model Database » The caliber database » 18J Extra Precision Oval (Unknown) (measures 18.6mm x 12.65mm or roughly 8.25L x 5.5L)
18J Extra Precision Oval (Unknown) [message #12778] Mon, 06 July 2020 00:57 Go to next message
C. Hurt is currently offline  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

[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 Go to previous messageGo to next message
Case is currently offline  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 Go to previous messageGo to next message
Barney Green
Messages: 1725
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)
Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12784 is a reply to message #12783] Mon, 06 July 2020 13:45 Go to previous messageGo to next message
thesnark17 is currently offline  thesnark17
Messages: 649
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 Go to previous messageGo to next message
Case is currently offline  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 Go to previous messageGo to next message
Gary
Messages: 2108
Registered: May 2013
Location: Left Coast
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
Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12788 is a reply to message #12787] Mon, 06 July 2020 19:32 Go to previous messageGo to next message
Barney Green
Messages: 1725
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)
Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12789 is a reply to message #12784] Mon, 06 July 2020 19:47 Go to previous messageGo to next message
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 545 times)


Matthias
Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12790 is a reply to message #12789] Mon, 06 July 2020 20:55 Go to previous messageGo to next message
thesnark17 is currently offline  thesnark17
Messages: 649
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
Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12795 is a reply to message #12790] Tue, 07 July 2020 01:26 Go to previous messageGo to next message
C. Hurt is currently offline  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.
Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12796 is a reply to message #12795] Tue, 07 July 2020 13:06 Go to previous messageGo to next message
Case is currently offline  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
Re: Caliber 151 - (Extra) Precision - 5 1/2 '" [message #12805 is a reply to message #12796] Wed, 08 July 2020 14:51 Go to previous messageGo to next message
Case is currently offline  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 Go to previous messageGo to next message
C. Hurt is currently offline  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.
Re: 18J Extra Precision Oval (Unknown) [message #14720 is a reply to message #12778] Mon, 05 April 2021 16:19 Go to previous message
Case is currently offline  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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