1933 Latvia-Africa First Flight special cover franked 1932 Air Charity Eagles set imperf 10s-20s to 25-50s, tied by 'Riga-Lidpasts 28.5.33' pictorial airmail cds. SG 219-21B cat £120++, Mi 203-5A cat €100++ as loose stamps alone, plus large premium for usage on Latvia-Africa cover. Purchased by vendor in 1990s for DM350 = A$290. (P)