folio (304 x 210mm.), title within woodcut border, woodcut initials, woodcut illustrations with 9 printed extension slips (that on A6v with two slips, on B3v with one slip, on C4v and D3r with three slips each), woodcut printer's device above colophon, contemporary limp vellum, manuscript fragments used as spine liners, title-page with two ink stamps erased, first quire slightly browned, occasional light browning, some resewing in binding (to reattach cover), lacking two pairs of alum-tawed ties

P. Paulus Gualterius, early inscription on flyleaf (Pietro Paolo Gualterio, of Arezzo?); two small ink stamps erased from title-page; Libreria Antiquarian Mediolanum, bookseller's label on verso of flyleaf

Houzeau & Lancaster 3256; VD16 S9192; Zinner 1270

Condition is described in the main body of the cataloguing, where appropriate
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

Second edition of Stoeffler's treatise on the astrolabe and other instruments, first published by Koebel in 1513.