GREAT BRITAIN 1993 (VARIETY) 33P WORLD ORCHID CONFERENCE, GLASGOW MISSING IMPRINT
33p World Orchid Conference, Glasgow bottom marginal pair with left stamp missing copyright symbol and '1993' imprint. Fresh and fine. Mint never hinged. SG1662a; SC1496var
Note: the imprint flaw occurs on column 6, row 10 of dot panes
