Lot 50022 – Bulgaria, Eastern Roumelia – 1884 5pi, a great and unique trio of clichés

Bulgaria, Eastern Roumelia or Turkey – 1884 5pi, a unique trio in private hands featuring the background impression, including one master negative on film and one glass support cliché, these two showing part of an additional example at left, and one cliché on celluloid bearing a single design; only three matrices are known in the Musée de la Poste of Paris.