Internet Horology Club 185
Gruen Watch Serial Numbers

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January 07, 2011, 09:45
Roger Stephens
Gruen Watch Serial Numbers
case Gruen VERI-THIN cased and timed in U.S.A. Wadsworth 10k gold filled G337056 and a S under that


January 07, 2011, 10:12
Ernie Loga

Thanks for posting the photo. nice looking watch.
January 07, 2011, 10:17
Ernie Loga
Here is a photo of one I just got on Ebay. Inside the back cover is engraved, George F. Moultor, Xmas 1922. It is an octagon case, White Gold filled.

January 07, 2011, 10:18
Ernie Loga
Here is a photo of the movement with serial number 603236.

January 07, 2011, 10:19
Ernie Loga
A photo of the dial

January 10, 2011, 06:28
Roger Stephens
Ernie, a real beauty!!
February 15, 2011, 09:00
Mark Cross
The semi-thin 12s 15j I got for Christmas has the number 748 (model or serial number?) and 'Gruen Guild' on one of the plates. Housed in a solid bow Gruen marked gold filled case.
Chris Abell currently has it, so I can't offer any more info off the movement than that right now.
Any clue what year this may have been made? I'm guessing mid '20's, as it has a dial EXACTLY like my 1926 Elgin 17j 12s.

Regards! Mark
February 15, 2011, 16:02
Ernie Loga
I don't know when they started using the Gruen Guild name for sure.The earliest Gruen Guild ad I have is from 1922. The newest is 1934. So all we know for sure is they used it from 1922 to 1934.

I believe the 748 is a grade or caliber designation. I have also collected numbers 650, 716, 756, 758, and 754. All of them were associated with a Gruen Guild watch.
February 15, 2011, 16:22
Mark Cross
Very good. Thanks!

I'll have to ask Chris to keep his eyes open for a serial number when he gives it it's COA.

Regards! Mark
February 15, 2011, 17:20
Ernie Loga
Here is a summary of the Names used in Gruen Ad campaign from 1915 through 1970:

1915 Gruen Veri Thin Watch
1915 Gruen Watch Manufacturing Co.
1916 Gruen Watch MFG. CO.
1918 Gruen Guild Watches
1919 Gruen Guild Watches
1920 Gruen Guild Watches
1922 Gruen Guild Watches
1923 Gruen Guild Watches
1924 Gruen Watch Makers Guild
1925 Gruen Guild Watches
1925 Gruen Guild Watches
1926 Gruen Guild Watches
1926 Gruen Watch Makers Guild
1928 Gruen Guild Watches
1928 Gruen Watch Makers Guild
1929 Gruen Guild Watches
1929 Gruen Watch Makers Guild
1933 Gruen Guild Watches
1934 Gruen Guild Watches
1936 Gruen The Precision Watch
1937 The Gruen Watch Co.
1937 Gruen The Precision Watch
1940 Gruen The Precision Watch
1941 Gruen The Precision Watch
1942 Gruen The Precision Watch
1943 Gruen The Precision Watch
1944 Gruen The Precision Watch
1946 Gruen The Precision Watch
1946 Gruen The Precision Watch
1947 Gruen The Precision Watch
1948 Gruen The Precision Watch
1949 Gruen The Precision Watch
1950 Gruen The Precision Watch
1954 Gruen The Precision Watch
1955 Gruen The Precision Watch
1959 Gruen The Precision Watch
1970 The Gruen Watch Co.

It appears that they used Gruen Guild Watches and Gruen Watch Makers Guild interchangeably. I also uncovered an ad that used Gruen Guild Watches in 1918.
February 17, 2011, 11:12
Bill Carlson
Hi Ernie, I'll put these Gruen pictures on here if they will be of any help.

Bill Carlson
February 17, 2011, 11:13
Bill Carlson
# 2

Bill Carlson
February 17, 2011, 11:14
Bill Carlson
# 3

Bill Carlson
February 17, 2011, 15:33
Ernie Loga
Thanks Bill, yours is the first wristwatch I have recorded. Nice looking watch!
February 17, 2011, 15:35
Ernie Loga
Here is an updated list of Serial Numbers:

131 Gruen 50th Anniversary
474 Gruen Watch Company
21933 Gruen Guild
33859 Gruen Guild
42421 Gruen Watch Company
45256 Gruen Guild
47386 Gruen Guild
62000 D. Gruen & son
62001 D Gruen & Son
62609 D Gruen & Son
63710 D. Gruen & Son's
65077 Gruen Guild
66694 Gruen Guild
101760 Gruen Guild
126655 Gruen Watch Company
127674 D Gruen & Son
128303 Gruen Guild
128930 Gruen with Logo
129572 D Gruen & Son
137547 D Gruen & Son
138144 D Gruen & Son
140167 D Gruen & Son
313471 Gruen Precision
457723 Gruen Watch Company
461232 Gruen Watch Company
468750 Gruen Watch Company
469691 Gruen Watch Company
472682 Gruen Watch Company
484309 Gruen Watch Company
484867 Gruen Watch Company
496058 Gruen Watch Company
506208 Gruen Watch Company
517242 Gruen Watch Company
517295 Gruen Watch Company
518969 Gruen Watch Company
519526 Gruen Watch Company
521156 Gruen Watch Company
528203 Gruen Watch Company
530065 Gruen Watch Company
541713 Gruen Watch Company
544818 Gruen Watch Company
547011 Gruen Watch Company
549973 Gruen Watch Company
552690 Gruen Watch Company
555328 Gruen Watch Company
556841 Gruen Watch Company
556847 Gruen Watch Company
561747 Gruen Watch Company
603236 Gruen Watch Company
605166 Gruen Watch Company
605896 Gruen Watch Company
632273 D Gruen & Son
711343 Gruen Guild
711516 Gruen Guild
850685 Gruen Watch Company
5577783 Gruen Watch Company
2-194135 Gruen Watch Company
2-219954 Gruen Watch Company
2-327612 Gruen Watch Company
2-328087 Gruen Watch Company
4-121626 Gruen Watch Company
4-121626 Gruen Watch Company
4-125142 Gruen Watch Company
4-132618 Gruen Watch Company
4-133613 Gruen Watch Company
4-140344 Gruen Watch Company
4-151492 Gruen Watch Company
4-185332 Gruen Watch Company
4-230555 Gruen Watch Company
4-232560 Gruen Watch Company
4-233057 Gruen Watch Company
No Number Gruen
No Number Gruen Guild
No Number Gruen Guild
February 19, 2011, 11:34
Vincent Pullara, Jr.
Here are 3 of my Gruens
Gruen Veri-thin 17j Mvt. #4-134013
Gruen Veri-thin 17j Mvt. #4-187958
Gruen VeriThin 19J Mvt. 475602

February 21, 2011, 23:43
Ernie Loga
Thank you Vince. Your watches are entered into my data. Do you have photo images to post?

February 10, 2012, 20:36
Michael Barnett
I know this is an old message, but with Gruens decades can go by before breakthroughs happen.

On the forum, we've just posted one family of calibers that has (hopefully) been decoded. The families are of the 405, 420 & 425 calibers.

You can find the post here:

I hope folks that are registered members of the forum have comments, corrections, or additions. If you're not a member, please sign up, it's free of course.
December 23, 2012, 11:59
Teresa Jacobson
Gruen Watch Co
Very Verithin model
17j m494232
December 23, 2012, 20:18
Roger Stephens
Gruen Watch Co.15Jewels s/n 4-121626 Veri-Thin
July 28, 2013, 02:18
Kenneth Edmondson
Thank you so much for your work here.

1) I have a Gruen Verithin (no hyphen) Precision, 17 jewels, Adjusted, Temperature. V4
Serial number: 539112

Case is a Wadsworth G081773 14k Goldfilled

Pentagon with pentagon cut crystal.

2) Gruen Verithin (no hyphen)
On movement: Gruen Watch Co, Verithin, 17 Jewels, 5 positions, Temperature, adjusted
Serial number: 484975
No case

September 10, 2013, 04:55
Michael Barnett
I recently figured out that this post was here. The post to pages on my site have changed. The one I posted on Feb 10, 2012 is now located off the main page.

The main site is:

The direct link to the serial number page is: