50th Auction Anniversary Auction - Day 3

Australien: 1939, RADIO STATION / WILLIS ISLAND, 7.APR.1939, oval handstamp in violet on cover with
1939, RADIO STATION / WILLIS ISLAND, 7.APR.1939, oval handstamp in violet on cover with single 2d scarlet KGVI addressed to Buka Passage Bougainville New Guinea, on the frontside straight line h/s "WILLIS ISLAND", stamp canceled on arrival BUKA PASSAGE/NEW GUINEA, 3.JE.39, backflap with imprint 'Burns Philp Lines'. F/VF condition. Scarce mail from a remote and tiny island in the Coral Sea.