Vintage Sterling Silver Ribbed Band Ring Size 10

Vintage sterling silver band ring with a very nice ribbed texture. It is a size 10 and measures 8.5 mm wide. It is thick and well made. Marked 925 and hallmarked inside. weight: 10.9 grams. 

This came to me from a man that found a large amount of rings on the beaches of Mexico and Southern California with a metal detector. The majority of them are from the 1970s and early 1980s.