Lot 80032 – Colombia – 1861, “Nueva Granada” 1p three glass support clichés

Colombia – 1861, “Nueva Granada” 1p three negative glass support clichés, in black (with Sperati’s manuscript notations), radiant blue colour, and another showing faint exposure with image reversal, also an exposure on celluloid of Bolivar 10c, mirror image and with production notes around design and dating Oct 1951. Unique and a very attractive group, less than 10 clichés recorded and the only known celluloid of the Bolivar issue.