22 x 15 cm. 12,104,29 pages. Brown, smoothed original leather binding with spine title and large blind-embossed cover vignette. (Signed: Carl Sonntag Jun., Leipzig). - Printed in 400 numbered copies in Caxton Gothic and Janson Italic on handmade laid paper. One of a few copies of the special edition in signed leather bindings by Carl Sonntag Jun. With a bibliography of the Philobiblon and its author. Immaculately preserved. - Sarkowski 262 with illustration. - Schauer, Volume II, 28-29 with illustration.