1987, 25th Anniversary of the Antarctic Treaty, 20c and 30c, complete set of two and imperforate (!) souvenir sheet used on large size FDC with special ''7 Marzo 1987'' cancellation, minor facial scratches, VF and rare, G. A. Jalil certificate, C.v. $500 for unused sheet, Est. $300-$400 (Image)

Zeppelin Flight. 1931 (October 24-28), 3rd SA Return Flight Paraguayan stationery postcard 70c red, uprated by 3 Paraguay definitives and 2 Argentinean stamps, appropriate cancellations, machine confirmation of Buenos Aires with ''CONDOR - ZEPPELIN'' line marking, Friedrichshafen ''28.10.31'' arrival ds, mostly VF and scarce mixed franking item, Sieger #135a, Est. $100-$150 (Image)