Ivory object slide, 2nd of 4, inscribed with ‘2’ at one end, from very early Culpeper microscope, by Edmund Culpeper, England, 1720-1730 Ivory object slide 1720-1730
Ivory object slide, 1st of 4, inscribed with ‘1’ at one end, from very early Culpeper microscope, by Edmund Culpeper, England, 1720-1730 Ivory object slide 1720-1730