acido pianoforte Prevalere inside ring stamp Assenza frangia semiconduttore
Ring stamp meaning? The inside is stamped with a diamond shape and the letters "STR" (2nd image). I assume STR means this is a sterling silver ring, but am curious what the
What does a 925 mark mean when stamped on jewelry?
How visible is the hallmark stamp on the inside of your ring?
Meaning of the Marks Stamped Inside Your Jewelry - Beadnova
Personalising wedding rings with stamped letters – Louise Mary Designs
Identifying rings: Marking system for rings, p.3
Symbols stamped on the inside of an antique ring. Generations old, no idea of origin. : r/whatisthisthing