Lot 80110 – Spain – 1852 Isabella issue, 2r, 5r, 6r, five glass clichés and one celluloid

Spain – 1852 Isabella issue, 2r, 5r, 6r, five glass clichés, incl. one dated March 1944 with comprehensive production notes around the area of design, a 2r with black surround to concentrate the light, and a cliché of the 5r in red with a most unflattering portrait of the queen and a rather poor reproduction, also one celluloid trial exposure in pale-red with notes at base “voile vio” referring to the violet filter used to obtain optimum contrast in lithography; a unique and visually attractive range of documentation for Sperati’s production of this issue.