1959 TESTS FOR COLOUR-BLINDNESS SIGNED BY S. ISHIHARA COLOR BLINDNESS 12 PLATES ON including references to engines

including references to engines

while another sold at Bonhams in 2013 for USD 16

on a U-shaped base

Bumstead's editorial work makes Hunter's original observations accessible to a 19th-century American readership

The case contains the second eyepiece

1959 TESTS FOR COLOUR-BLINDNESS SIGNED BY S. ISHIHARA COLOR BLINDNESS 12 PLATES ON including references to engines1959 Tests For Color Blindness S. Ishihara Signed by the Author. "11th Reduced Edition" with 12 color inserted, fold out plates. This is the earlier style edition with removable color plates inserted in slotted pages. (Later editions had bound in plates.) Hardcover, cloth, about 8 inches by 6 inches. Very nice edition. Some wear to cover, otherwise in outstanding condition. Signed by the author in blue fountain pen "S. Ishihara" on the edition label