1976 Navajo Liberty Bell Pendant with Chip Mosaic

Vintage Navajo sterling silver Liberty Bell pendant. It was made for the 1976 Bicentennial. It is inlay set with shards of coral, turquoise and mother-of -pearl. Measures 1 1/2" tall with the jump ring and 1" wide. Nice hunk of silver as it weighs 9 grams. First one of these that I have had the opportunity to purchase. No hallmarks.