United States. (Germany). 1891. Registered United States postal stationery envelope four cents green upgraded with SG 224, 1c ultramarine and SG 228, 5c brown (pair) tied by oval New York/Reg with hand-struck 'Registered/ Nov 11 1891/ Newark/ N.J.' in violet, addressed to Germany, routed via New York with New York registration label and Naumburg arrival on reverse. Very attractive franking.