South Australia - Service Stamps: 1876, 6d. Prussian blue, perf. ~12, with surch
South Australia - Service Stamps
1876, 6d. Prussian blue, perf. ~12, with surcharge in type 1, single franking (slight natural paper wrinkling and scissor's separation at right) on cover from "G.P.O. ADELAIDE AU 15 76" to Germantown/Philadelphia/USA with San Francisco transit mark 21 SEP on front and Philadelphia...