Hi Gaspare,

in red, did you mark places that are similar to casting?

I looked at all the threads of this forum and did not find any one on 100% of the confirmed original onologic Design of this SA ring.
Maybe someone here will show a 100% original WW2 period, a similar design of this SA ring. I do not mean which showed Odal.
Namely, as I showed.

B.r.
Sergey