An American silver and enamel stamp case

An American silver and enamel stamp case,

marked sterling and pat. June 24 90, circa 1910,

envelope form, hinged cover, the front enamelled with the address 'Ethel Newell Doggett, Fredericksburg, Va', and with a stamp and post mark 'NEW YORK II, 6pm 1910', the reverse enamelled 'P.O 11.12.10 Rec'd', length 3.2cm, plus another American silver stamp case of similar design, with an enamelled post mark of 'New York 9 3pm 91', the reverse enamelled with the 'P.O.9.10.91Reg'd', with a chain attachment, approx. total weight 0.7oz. (2)