Pseudo Isochromatic Plates for Testing Colour Perception fine-bindings abbeys and priories mainly)

abbeys and priories mainly)

London: Sidgwick & Jackson

Richly illustrated throughout in colour

Full tree-calf with decorative gilt border around the boards

64 plates of photographic plates including the coloured frontispiece

Pseudo Isochromatic Plates for Testing Colour Perception fine-bindings abbeys and priories mainly)Philadelphia: Beck Engraving Co., 1940. Book of folding colour plates made up of dots with numbers in contrasting colours on each one. Includes the instructional slip for usage. Original black cloth with gilt lettering to front, housed in the blue cardboard box which is split at some joints. Lettering on spine somewhat faded.