Nuremburg type boxfoot microscope marked "iM" (in flattened circle), German, 1781-1820 Nuremburg type boxfoot microscope marked "iM" (in flattened circle) 1781-1820
Drum microscope with pasteboard tubes, similar to Nuremberg microscopes, Continental, possibly Italian, circa 1800 Drum microscope with pasteboard tubes 1780-1820