Late 19th century two sided real bird feather necklace. Mother of pearl background with real bird feathers boldly fashioned into colorul birds. Glass watch crystal covers both sides of this unusual pendant. The chain appears to of been added at a later date, though still well aged. The MOP glistens like nothing else I have ever seen. Marked inthe tiniest manner Pat. Pending J.M.F. co. The bezel though impossible to photo has a richly detailed engraved style. I can assure you this almost impossible to photograph properly piece is perfect.