Lot 80107 – Spain – 1850 first issue, important assembly of eight glass clichés for the 10r

Spain – 1850 first issue, important assembly of eight glass clichés for the 10r value, incl. on attractive celluloid cliché mounted between panes of glass dated Feb 1941 with image reversal and notations at base noting the Agfa photographic film used and the duration of light exposure, and a range of glass clichés showing a range of colours, also a paper dated March 1930 with two impressions of the postmark and production notes surrounding (one impression seems to have been rejected), also five proofs on paper in shades of green ranging from apple green to bluish green; an extraordinary and unique group, only one glass cliché was included in the “Ultimate” collection.