Stamped "F&H" in a flag for Foster & Bailey (1878-98), and "Sterling," this thimble is typical of the form save it has an applied Marine Corps insignia on the top lid. This sets it apart from others of its kind and period.
It is round and measures 1" high by 1" wide and weighs not quite .3 T. oz. It has a plain band around the middle and a filigreed base and lid. The lid has a ring attached to you so that it could be attached to a chain and thence a chatelaine...