Lot 50119 – USA – 1845 5c: an astonishing assembly made up of 26 items:

United States – 1845 5c: an astonishing assembly made up of 26 items:

The Designs: Two extraordinary negative glass clichés dated January 1929, three glass clichés in orange-vermilion, brown and black (shades of colours which provided very good contrasts), the orange exposed to light from the back for 1 min, the black with 3 mins exposure, also dated “1/29”; four clichés on celluloid of which two with unclear impression and one “”reexposé dos” being re-exposed to light from the back “Pathé cliché 2/53 Calor voile vio” (cliché Pathé in Feb-53 with ‘Calor’ lamp and violet filter -which indeed obtained the shade obtained-) the other being a try “on the third day”exposed for 2 mins to a ‘Calor’ lamp, the other two in vermilion with notes about the Pathé cliché, the exposure times and filters used; as well as finished reproduction

The “ACM” initials: one exceptional piece of paper dated Aug-45 where Sperati tried the initials by hand with an additional essay in a pinned piece of paper, including manuscript text by Sperati featuring a much more accurate calligraphy than usual (suggesting that it was an important note or that he intentionally wished to reveal his method in a clearly understandable text?) and with the same ink he executed the initial’s trial at top and reading (translated): “red ruby+violet magenta” (for the shade of the ink) and “one night with formaldehyde very well, see method for the pen cancellation smoked in black and humidified on the top…”; in addition glass support cliché on Pathé film numbered “444”, two clichés on Agfa and Pathé celluloids numbered “441” & “443”, two clichés on film dated “3/53” and with exposure to ‘Calor’ lamp, another on celluloid indicating to have used a very light filter (indeed causing a weak impression).

Cancellations: “Paid” in arc and straight line, including three clichés on celluloid (two reversed and one one negative), six working essays on paper with notes by Sperati.

An extraordinary lot revealing some techniques of Sperati and with nothing similar recorded before.