MAIL TO AUSTRALIA: 1915 (Mar 19) cover with Eastern & Australian Steamship Co embossing on the flap, endorsed at U/L "Pass/Paul L [ ? ]/Lt Colonel", to NSW with '1d.' on Marshalls 5pf SG 51 tied by oval Rabaul d/s in violet, Sydney arrival b/s of 3AP-1915.
Auction Category: NEW GUINEA - 'G.R.I.' SURCHARGES - Postal History
Advertising , GERMAN COLONIES , NEW GUINEA German (Deutsch) New Guinea , Postmarks , NEW GUINEA "G.R.I." Overprints , AUSTRALIA , Military World War I , New Guinea , Postal History , overprinted stamps