1961 REGISTERED AIR MAIL LONDON TO CHILE/2/6 CASTLE USAGE. Fine QEII 1/3 grey registered envelope London to Chile uprated with 3d Wilding and fine 2/6 Castle cancelled BEDFORD ST cds's 27 FE 61. On reverse CHILE/SANTIAGO receiver 2 MAR 61. Very fine usage. (Ref 109600).
