There were hundreds of makers of spyglasses over the last three centuries, and without an engraved name, there is little or no hope of identifying the maker of a telescope. Many forgeries are to be found in auctions since it is easy to engrave a well-known name onto the brass tube of a scope.

Broadhurst, Clarkson & Co. Benjamin Martin established an instrument business in 1750. His son Joshua joined him in 1778 and in 1782 he patented a method for producing brass tubing.

Dollond Once of the most forged names in antique telescopes. The Dollond family made telescopes for five generations.

Harris, Thos. & Son This maker worked between 1800 and 1840. (Battle of Trafalgar/George III/IV / William IV period). Early scopes were often inscribed with italics on the first draw. Later (after c. 1880) scopes were inscribed with block printing.
spy1800smend02

Most early 1800’s telescopes had an eye piece with a slide down shutter like the picture shown on the left.
tel02a tel02b

K70013
tel01a
tel01b

K70014

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