I picked up this watch and was trying to identify which company made it. The SN is B625682. Also Would anyone have the missing pieces to the regulator assembly? Thanks for any help. Ken

This is a 21J Ball Hamilton, No Seal, circa 1927. It is 1 of 41,000 total made like it.

https://ihc185.infopop.cc/eve/f...21060351/m/944107111

regards,
bb

bb, Thanks for your response. Could I have assumed that because of the serial number range shown in the book?

Ken, The piece missing is called a regulator spring.

Regards,
Larry

I am not the Hamilton pro but I believe a similar pattern spring was used on the 992 and they do come up for sale on ebay or you might locate a donor watch at a reasonable price.

I don't know, but you can do research on this site and find all the info that I transmitted.

It also is missing the regulator spring "screw" to secure it to the bridge & the "adjusting screw" that fits in the side of the bridge.

There actually are about 3 different lengths of the Hamilton 16sz regulator springs, so you will have to make sure you get the correct length which will fit over the top of the bridge screw and doesn't impede that screw.

I believe I have seen this same movement before by another member if memory serves me......

regards,
bb

I think the 992 is to small Deacon, not sure, but every one I have compared it with it is.

Buster, didn't you mean that the regulator/adjusting screw goes in to the side of the "spring"?

Regards,
Larry

Sure Larry , the adjusting screw "screws" into the side of the spring which is threaded and then "fits or lies" into a groove that is machine cut into the side of the bridge itself

regards,
bb