Oval crystal-cased verge watch with outer case and ribbon with miniature and locket by A Senebier Clockmakers 1630
Filings coherer, glass tube curved into near U-shape at one end with coil winding at other end, 1894-1904 Radio Communication 1894-1904
Microscope used by Louis Pasteur in his investigations on silkworm diseases, Paris, France, 1860-1870 Microscopy (Wellcome) 1860-1870