COOBER PEDY SOUTH AUSTRALIA 1939 COVER SC# 166-168 "ONLY UNDERGROUND POST OFFICE $6.25 USD Sold on: 2014-Jan-22 Marketplace: eBay 1 Treasure 0 Trash 100% Detail: COOBER PEDY, SOUTH AUSTRALIA 1939 COVER SC# 166-168 "THE ONLY UNDERGROUND POST OFFICE IN THE WORLD", SIGNED BY POSTMASTER “First Day of Issue”, “Flight, Voyage, Special Event” postal stamp cov... More Relevance Historical Items
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