Solid silver pocket magnifying loupe / telescope, circa 1800.
Similar devices were made by John Dollond of London.
A large lens and smaller sample platform (lens) with finger ring at one end.
Smaller lens with original black frosted glass edge, now partly worn.
The platform, a negative lens, has the dual function of acting like the first lens of a simple telescope. The oblong section frame with slide out bed for focusing.
Large 30mm diameter front lens, smaller lens 16mm diameter.
Magnification approximately 2.5x.
2,5/8'' or 67mm long extended.
All in excellent condition and good working order.
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Internal Reference: 240508
Antique ID Number (AIDN): SA1067584
Dateline of this antique is 1800
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