Nice vintage cha cha expansion link stretch bracelet with olive green dyed pieces of mother of pearl shell by JSFK. The bracelet itself is stainless. This is a bit heavier piece due to all the shell.

• Size: links are 1/2" wide and about 1" wide measuring with the beads. Adjustable with metal stretch links.
• Type: Pre Owned Mid Century from the 1960's. 
• Condition: Links stretch and close as they should. There are a few of the beaded dangles missing when I checked the bracelet thoroughly. 
• Materials: Stainless steel, dyed shell beads. 
• Markings: Marked Pat. No. 407019, Trade Mark J.S.F.K, Made in Japan on the inside of the bracelet on one of the links.