-
Looks like a thin band with the classic 'Tank Treads'. A separate skull soldered on. The content number stamped it.. Not seeing anything wrong here I'd say you have an excellent condition example! This pattern is old. Made available give or take a couple years in 1920.
and,, these were available probably right to mid war period..
You got a nice ring there 'Lakesidetrader' !

RLB_Schmuck_0002 - Copy.jpg (83.25 KB, 234 downloads)