1939-48, King George VI, 2s6p-£1, complete set of six high values, including both 10s stamps, full OG, NH, VF, SG #476/78c, £425 (Image)

1973, Good King Wenceslas, 3½p multicolored, a single with blue color omitted (peasant's leg and robes), full OG, NH, VF, a common stamp is added, SG #948d, £250 (Image)

1932 (March 20-24), 1st SAF cover from London to Bolivia, franked by three values including King George V and Sea Horses 2s6p chocolate brown, tied by London ''19 MR 32'' ds, Berlin ''19.3.32'' connection, violet flight marking and La Paz ''29. MAR. 32'' receiver, mostly VF, B. Moorhouse certificate, Sieger #138, €500 (Image)

1933 (May 6-10), 1st SAF cover from London to Uruguay, franked by four King George V 1s bister, tied by London ''5 MY 33'' ds, red Berlin - Friedrichshafen connection, blue confirmation cachet and Montevideo ''MAY.11.33'' arrival marking, slight overall toning, mostly VF, Sieger #202, Est. $200-$250 (Image)