Vintage Sectional Fish Pendant in Sterling Silver with Inlay Mexico

Vintage Mexican sterling silver sectional fish pendant. It is set with green calcite shard mosaic. It is 4 3/4" long by 1 1/2" wide. Hallmarked on the back. Marks include a number 2 eagle stamp. C. 1950s. Weight: 24.6 grams. Some tarnish and some old crusty silver polish in the low spots. I have  not found one of these in years. Super nice one,