$326
Three Student Microscopes, late 19th/early 20th century, the first a typical German boxed drum-form student microscope with draw tube focus, ht. 6; the second a boxed example with green-painted base and mounted mirror ht. 7 1/4; the third on a blue-painted disc base supporting a ball-and-socket pivot, and brass tube with spring stage, ht. 10 1/2 in.
Auctioneer:
Skinner
Date:
2011-07-16