James Queen & Co. "Convenient" Class Microscope, fourth quarter 19th century, Philadelphia, Pennsylvania, lacquered brass instrument with single draw optical tube, locking ring, circular base with Lieberkuhn mirror and spring, 1/2-in. objective, signed on base, with original fitted box.
James Queen & Co. "Convenient" Class Microscope, fourth quarter 19th century, Philadelphia, Pennsylvania, lacquered brass instrument with single draw optical tube, locking ring, circular base with Lieberkuhn mirror and spring, 1/2-in. objective, signed on base, with original fitted box.
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