Lot 80120 – Switzerland, Canton Zurich – 1843 4r and 6r, group of six items, incl. 4r master cliché

Switzerland, Canton Zurich – 1843 4r and 6r, group of six items, incl. 4r master cliché on celluloid with manuscript production notes and dating April 1945, and a spectacular cliché on celluloid with mirror image and comprehensive notations (Sep 1951) relating to fotographic filter and the Verichrome film used by Sperati, for the 6r one cliché one celluloid on transparent film and one negative cliché on glass coloured brown, also one glass cliché of the veritcal background lines (a peculiar exposure on a glass plate that incorporates drawings of young people dancing perhaps from a wallpaper), and finally one cliché with impression in red vermilion of the Zurich rosette pm, partly hand coloured in red on translucent celluloid dated May 1953; a stunning and very diverse selection of production items of the various components,including the important master cliché of the 4r from which subsequent reproductions were developed.