Vintage 1970s Handmade Pinch-Cut Hollow Bracelet Recovered from Overseas Secondhand Market

This bracelet was sent by a U.S. partner 7-8 years ago. Although the clasp is marked, I'm not certain if it's sterling silver. It should contain silver, but the purity is unknown. I'll treat it as a vintage item for sale. The hollow shell-shaped cutouts are handcrafted, made freely yet resulting in a rare design. Total length approximately 18CM, adjustable shorter. Width about 13MM. Weight around 6.07 grams. Only one available. Accompanied me for many years, today I unexpectedly found it on my workbench. Time to find it a new owner—price 200. Firm price.