Clarinet--Van Der Hagen, Amand

26 leaves ([2], 3 & 2-47 pages), oblong 4to (c.24.5 x 33cm), engraved throughout by Ribière, signed by the publisher on title ("Boyer"), 2 fingering tables illustrating early clarinets, contemporary wrappers; blue stencilled paper over card, early ownership or presentation inscription to flyleaf (Henry De Vay), tear to pp.45/46, [cf RISM Écrits, p.856 (one copy only)]

"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."

Very rare:  This is one of the earliest treatises on the clarinet, and probably the earliest ever to appear at auction.