stem movement interchangeability for 10BX

Submitted by grmike on

I haven't had any success finding a stem for the 17 jewel movement 10BX.  the watch is from the 1940's.  I noticed that all the 10B(A-Z) movements all have BXW stamped on the movement but some of them are 15 jewel movements so I don't think the stems fit all the varieties.  

I've searched the interchangeability charts but no sign of 10BX.

Posted May 6, 2024 - 11:22am


best I got....

Posted May 6, 2024 - 11:48am

amazing ! are you selling it or is that a photo you discovered online ?

Posted May 6, 2024 - 2:54pm

In reply to by grmike

It's just a random image, but it helps.

I wouldn't get too overly excited as none of the movements listed are very well known, to Me. 

Perhaps one of the Watchmakers will chime in with further info. 

Posted May 6, 2024 - 3:07pm

In reply to by grmike

here You go,

In the discussion Reverend Rod mentions the 10BA ( a listed interchange on the stem package) being an ETA 900 ebauche.

I think a stem for the same would work and appear plentiful.

*disclaimer:  I am not a Watchmaker, not even close....haha.

Posted May 8, 2024 - 8:40pm

I like to use Emmywatch for interchange info.  You can see from that link that the stem comes in different tap sizes as well as, apparently, a split stem. Clicking on any of those stem options will show which movements the stem interchanges with.

Posted May 9, 2024 - 5:02am

In reply to by GuyMontag

Personally I've never had any luck with the referenced database,  click 'Buy part' and down the rabbit hole You go. 

Posted May 9, 2024 - 12:09pm

In reply to by FifthAvenueRes…

Yeah, I don't use them to buy parts. But the database seems to be quite good for interchange info. It looks like they probably (just a guess) scraped the Jules Borel database and sometimes they seem to have more information than the JB database does. Plus, it's just presented in a much more user friendly format than the JB site.

Posted May 9, 2024 - 3:24pm

I have some 10BA stems if you're still looking.