Enamel Bangle Bracelet Vintage Blue Bubbles Unique

This is a lovely, unique vintage blue enamel bangle clamper bracelet with design of circles or bubbles that have a lighter blue inside - it reminds me of the ocean. It's in excellent condition, I don't see any marks on it but it is a used item. Each circle is outlined in silver, it measures 2 1/2" across, is 7" in length, and it's a clamper or hinged bracelet.