Lot 80074 – Great Britain – 1880 2s Queen Victoria, group of five glass clichés

Great Britain – 1880 2s Queen Victoria, group of five glass clichés of position KJ, incl. one negative cliché painted with brown surround to focus the light, also a cliché in the red-brown colour, with varying production annotations showing Sperati experimenting with differing levels of light exposure to achieve the most desirable result; a unique range towards the production of this famous stamp.