Hello;

Can anyone tell me what size this Hampden movement is?

I bought it recently and the seller says the whole case diameter is 1 1/16" I thought it may be a 16s but not 100% sure.

Can someone tell me by the serial number? Serial # 450485

Also, the jewel count?

Thanks for any help.

Bud

18 size, 11 jewel per the Hampden data base.

Nice one. I love the Teske regulator.

Gosh Bud, I haven't heard that word in 30 years. Please, does it still mean the same thing?

Grade 31 model 2 1887 production stem wind lever set