Lot 50121 – United States – 1847 10c Washington, glass cliché

United States – 1847 10c Washington, glass cliché in grey with Sperati notes, those in brown from an earlier period in Feb. 1953 referred to the sun and the fabric used to the exposure, and others in violet « 1. mou / 2. dur pouri sans couche coll. prov. » (his two first attempts were excluded as they were not satisfactory); an extraordinary and unique piece which will provide a very significant presence in any specialized collection of the United States first issue; the « Ultimate » collection did not include any cliché of the first issue.