Lot 50858 – 1960 Courvoisier colour separation proofs for the 10c Bandaranaike, a total of 75 imperforate essays/proofs

1960 Courvoisier colour separation proofs for the 10c Bandaranaike, a total of 75 imperforate essays/proofs in 25 groups of three (separate frame and vignette and complete design), comprising four essay designs (one showing him in western dress, another with small circular vignette) each in either four or six different colours, and the adopted design in five different colours (one the redrawn type as issued), presented on seven specially printed numbered (493-9) and dated (30.9.60) album pages, the unique archival record