A FIXED FOCUS SPYGLASS, PROBABLY DUTCH, CIRCA 1650
unsigned, constructed from two bone sections in the form of bamboo and joined via a central thread -- 3.7/8in. (9.8cm.) long

Lit: Louwmann & Zuidervaart: A Certain Instrument for Seeing Far, Wassemaar, 2013, p.35 & 150-1, where similar examples are described. An almost identical example was excavated in Amsterdam in 2011 and is on view at the Rijkelijkhuizen, who suggested this dating.

Condition Report
optics are working, but may be later. end threads suggest this once had caps which are now missing.

We are pleased to provide you with a general report of the condition of this property. 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 Charles Miller Ltd 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.