10BM

Start Year
1949
End Year
1956
Jewels
15, 17, 21
daybreakind
Posted December 1, 2011 - 9:52pm

 this is a 15 jewel movement

William Smith
Posted September 7, 2014 - 8:19pm

10BM  15 J w/ no date code. Click pic for Shawn's example and discussion of no date code.

 

FifthAvenueRes…
Posted March 28, 2025 - 5:54am

a movement of this era sans a datecode would suggest 1949.

This 15J 10BM looks to be Military. 

Andersok
Posted September 7, 2014 - 8:47am

1949 - 17 Jewels

William Smith
Posted September 7, 2014 - 8:26pm

1954 (L4) w/ 21J   Click pic for watch record.

Jatco
Posted October 2, 2016 - 10:00pm

Where does L2 fit in, time frame..?  Saw a nice 'Caldwell' . 21 Jewels 10BM on the'Bay' and wondering about the L2. l'm looking for a 'Birthyear' piece...!

JEV1A
Posted March 27, 2025 - 11:27pm

I have a 10BM Movement and its date is identified with a "square" where usually I see a L-0 or L-1 etc. There are no other marking such as A-9 etc. A square normally dates a Bulova movement much older. 

Does anyone know or can identify a SQUARE on a 10BM Movement?

Thanks

John V. 

 

 

FifthAvenueRes…
Posted March 28, 2025 - 5:29am

Very interesting.

The Square would date the 10BM to 1946, I believe Military.   I'm going to guess it's 15 Jewels?