Cotta's Almanac Transformation Playing Cards
The very first transformation deck issued by Cotta is from 1805. This deck is probably the most famous of all six, and is incredibly scarce. Original illustrations were fiddling artworks done by hand, on copper plates that were manually engraved with stipple and etching, and the cards were printed on linen period stock that was 97 mm x 69 mm in size, with blank card backs and squared corners at that time. Only the court cards were hand-colored, while the number cards used red stencils.