Made in the 1950's, these very unusual vintage cufflinks are not signed but I can tell you a lot about them.
They are made of silver rhodium metal with premium quality faceted Hematite cabs. The round settings are concave with etched radiating sun like patterns. If you look closely at this crescent moon shaped radiating lines, it is actually not a Mid Century Modern design but rather, a Greek Revival motif.
These cufflinks are exceptionally quality with gemstones, indicating they were probably made by Joseph Vastano. He didn't sign alot of this cufflinks but he almost always used gemstones in his unique designs. The back of the cufflinks has a unique radiating pattern as well.