$400
Spencer Browning and Rust 12-inch Ebony Octant, London, 19th century, bone scale calibrated 0-95, brass index arm with vernier, sighting pinnula, sun shades, cross-arm bone boss reading: Spencer Browning & Rust H Duren New York , housed in a keystone oak case with retail label from H. Duren.
Auctioneer:
Skinner
Date:
2016-04-29