Aquatic microscope signed "Dunn
1834-1867
Aquatic microscope using the box as the base
1820-1850
Aquatic and rackbarrel microscope in fishskin case
1800-1830
Aquatic microscope, 1750-1800
1751-1800
Aquatic microscope in fishskin case
1750-1800
Aquatic microscope with the box as base
1820-1850
Aquatic microscope with accessories
1790-1820
Aquatic microscope with box as base
1831-1870
Aquatic microscope by Cary
1841-1860
Aquatic microscope with box as base
1770-1790
Screwbarrel and aquatic microscope in fishskin case
1761-1780