I can not find this anywhere! The hallmark looks like it clearly has the initials " B S" . There seems to be a slight cresent shape that opens towards the B, but it is small. This piece is a pretty large and heavy pendant ( almost 3 1/2 inches in length). The turquoise looks genuine , and the feathers have a lot of good detail on them. The other pieces I have found in this collection range from zuni rings to Maisel’s sterling bracelets . This one is very tricky though! Any help would be greatly appreciated.