Lot 80086 – Luxembourg – a single glass cliché featuring two postmarks, PD in frame and circular datemark

Luxembourg – a single glass cliché featuring two postmarks, PD in frame and circular datemark Luxembourg 8 Dec 1861, with copious production notes in Sperati’s hand and dating Apr 1951, together with a celluloid fragment with the same constellation; a unique pair of glass and photographic paper developed for Luxemburg stamps of the 1858-60 issue.