Spencer & Co., London. Circa early-to-mid 19th century.
This octant appears to have an ebony frame with ivory scale, vernier and signature plate. The index arm, mirror supports, and double-holed sighting pinnula are brass. Case – approximately 13 ¾ long and 12 ¼ inches wide at its greatest measurement – has an interior seller’s label which, in part, reads: “William Huntington/Nautical Instrument Maker; No. 134 Broad Street/Opposite Purchase Street/Boston/Has for sale, /Sextants, Octants, Quadrants, compasses…”.
Condition: Very good.