1950 Swiss 10BC movement. L0 marked on movement and also on stainless case back. "Swiss" below sub second. Clinton expansion band.
Hi Wangbow. You have a Bulova "Franklin" model. Without seeing the back of the case the year cannot be determined. The "L0" on the movement indicates it has a 1950 movement. If the case back has "L0" on it, then it is a 1950 "Franklin."

In reply to Hi Wangbow. You have a Bulova by 1955mercury
thanks for the ID, looks spot on
Agree with Franklin
Yes, that is a Franklin.
+1
Yep nice Franklin would have like a pic of the strap
In reply to Yep nice Franklin would have by donegd
I will try to add a pic of the band by tomorrow. It band itself was the whole reason I picked this watch up in the first place.
+1 from me for Franklin ID