Nuremburg type boxfoot microscope marked "iM" (in flattened circle), German, 1781-1820 Nuremburg type boxfoot microscope marked "iM" (in flattened circle) 1781-1820
Nuremberg type compound microscope marked JFF in heart-shape base, German, late 18th or early 19th century Nuremberg type compound microscope marked JFF in heart-shape base 1780-1920
Nuremburg type compound microscope, marked "JFF" in heart shape, German, late 18th or early 19th century Nuremburg type compound microscope 1780-1820
Nuremburg boxfoot microscope marked "1S" with sun, in oval, German, 1718-1820 Nuremburg boxfoot microscope marked "1S" with sun 1781-1820