A very early Queen & Co (Philadelphia) compound-monocular microscope in its original mahogany case. There is a revolving disc of diaphragms below the stage and a bull’s-eye condenser on an adjustable arm. It retains most of its original lacquer. According to D.J. Warner’s introduction to the Jeremy Norman reprint of the Queen catalogs, James W. Queen (1811-1890) opened his business in 1853 at 264 Chestnut St. In 1858 ,as a result of a street renumbering, the address changed to 924 Chestnut. This allows us to say with confidence that this microscope was made between 1853-1858.
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