$356
Brass Monocular Compound Microscope, J. Grunow, New York, 19th century, rackwork coarse focusing, pillar-mounted fine focusing, marked on the barrel support with maker's name, two-part nosepiece with marked objectives (one Grunow), square stage with clips, substage with condenser and iris diaphragm, side-mounted swing-arm plano/concave mirror, black-painted U-foot, ht. closed 11 1/2 in. Provenance: Billings Collection, fig. 145.
Auctioneer:
Skinner
Date:
2011-07-16