Lot 80007 – Australian States, Tasmania – 1892 £1, a spectacular group of sixteen production

Australian States, Tasmania – 1892 £1, a spectacular group of sixteen production elements for the bicoloured stamp, including a rare engraved copper plate of the value tablet, an impression of the value tablet on darkened onionskin paper as well as on two glass support clichés, also four glass clichés featuring the design without value tablet in brown and in the vermilion so often preferred by Sperati, and four clichés on celluloid, one coloured vermilion, also four papers with trial impressions that show experimentation with shades of green; an unrepeatable set with the original copper engraving of the value tablet that shows Sperati also producing his reproduction through typography and not only his usual technique of photolithography.