Nuremburg type drum microscopes marked "JFF" in heart on base
1780-1920
Nuremburg type compound microscope
1771-1800
Nuremburg-type drum microscope
1780-1820
Nuremburg-type microscope
1780-1820
Nuremburg-type drum microscope
1780-1820
Nuremburg type compound microscope
1781-1820
Nuremburg type compound microscope
1780-1820
Nuremburg type boxfoot microscope marked "iM" (in flattened circle)
1781-1820
Drum microscope with pasteboard tubes
1780-1820