Ebony 13-inch Radius Octant by Spencer, Browning & Rust

Description:

Ebony 13-inch Radius Octant by Spencer, Browning & Rust, London, with bone scale divided 0-95, brass index arm with screw adjustment and clamp, pinhole, mirror and set of detachable shades, in gray-painted mahogany case with contemporary label in script For Sale.

Note: Included in the lot are a receipt for $100 from John Bliss & Co., 26 Burling Slip, NY, dated July 24 1862, and an albumen portrait print (torn).
Estimate $800-1,200

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