Search found 207 matches

by JackW
Thu Jul 20, 2017 8:27 am
Forum: Gruen Watch Forum
Topic: Case serial numbers found in The Gruen Watch Catalog reveal interesting data
Replies: 4
Views: 161

Re: Case serial numbers found in The Gruen Watch Catalog reveal interesting data

The number 4,000 has been tossed around as a "batch size" From Cleves' talk he stated 2000 for batches from Wadsworth. Keep in mind this was from his interview with employees of Wadsworth towards the end of Wadsworth as a going concern. Might be worthwhile to review the talk again or write Charles....
by JackW
Wed Jul 12, 2017 10:23 am
Forum: General Discussion
Topic: International Dial not answering phone or emails
Replies: 16
Views: 1423

Re: International Dial not answering phone or emails

I just used Kirk Rich in California. I've mixed feelings about the results on the work. It looks good, for the fonts and the printing but they left a small flaw in the minutes track where it intersects with the subseconds track. More expensive than ID. Robert told me that he was nearly out of a blac...
by JackW
Tue Jul 11, 2017 1:44 pm
Forum: Gruen Watch Forum
Topic: Caliber 440 movement serial number dating
Replies: 17
Views: 667

Re: Caliber 440 movement serial number dating

I doubt that production was linear over the year. There were peak seasons like XMAS or graduation time just to name the two highest peaks. So I believe that in about April and October the production numbers should have been at least doubling or tripling the figures of let's say January production.T...
by JackW
Mon Jul 10, 2017 11:03 am
Forum: Gruen Watch Forum
Topic: Gruen Case Serial Number to Date Tool....
Replies: 3
Views: 187

Re: Gruen Case Serial Number to Date Tool....

Mike, I'm please that you think the Wadsworth Serial numbers were an important component to understanding Gruen watches better. You were a big part of that effort. Jack, did you keep track of the HIGHEST numbers you saw within each year? How often did the serial number nearly roll over or did it eve...
by JackW
Sat Jul 08, 2017 10:04 am
Forum: Gruen Watch Forum
Topic: Gruen Longacre Quadron 14K
Replies: 3
Views: 178

Re: Gruen Longacre Quadron 14K

Beautiful!
by JackW
Thu Jul 06, 2017 1:26 pm
Forum: Gruen Watch Forum
Topic: Caliber 440 movement serial number dating
Replies: 17
Views: 667

Re: Caliber 440 movement serial number dating

Hi Mike, What I'd be curious to see in your graph is the R^2 value for your data and an error or standard deviation calculation. You said you got your data from one single reliable source. However, I wanted to see if you are on to something here. I took data that I had from several years ago but als...
by JackW
Sun Jun 25, 2017 1:39 pm
Forum: Gruen Watch Forum
Topic: Straps 126 and 127
Replies: 14
Views: 643

Re: Straps 126 and 127

Big thank you to master-researcher Bazzab for locating this Strap 206 for sale (192218363067) (thank you Empressissi for permission to post your photos). Bit of a typo there... you mean strap 209, right? But cool that another one was found so quickly. Hoping Bernd will post an image of his. Is it y...
by JackW
Fri Jun 23, 2017 7:46 pm
Forum: Gruen Watch Forum
Topic: Survey of Gruen Material Catalogs
Replies: 9
Views: 389

Re: Survey of Gruen Material Catalogs

Hi Mike, That 1945 supplement is a new one to me. Very cool! Does it list the 460? I've also always wondered about the gap from the 1926 parts book to the 1939 book. But you reminded me of one thing... the 1945 catalog book. You've got the two different covers. I've been tearing about trying to find...
by JackW
Fri Jun 23, 2017 9:12 am
Forum: Gruen Watch Forum
Topic: Straps 126 and 127
Replies: 14
Views: 643

Re: Straps 126 and 127

But is the theory that every model of case that Gruen ordered from Wadsworth was made in a minimum quantity of 2000 Well, the talk by Cleeves was based on his interview with a Wadsworth employee that was there in the 1950s at the end. I don't disagree with the points that anyone is making. But on n...
by JackW
Tue Jun 20, 2017 2:21 pm
Forum: Gruen Watch Forum
Topic: Straps 126 and 127
Replies: 14
Views: 643

Re: Straps 126 and 127

Uh, OK...are you saying they were made on sequential batches? yes. I can't imagine why they would tear down the dies, make other cases, the set them back up again to run a different type of material through. not what I meant at all. I'm suggesting is that they made the run of 2000 of one color and ...