拍品 107
107
An early 19th century and brass octant the maker's ivory plaque signed 'Moon Junr West India Dock Rd LONDON', the frame with ivory scale, four shades, mirrors, telescope mounting socket, the index arm -- 9 5/8in. (24.5cm.) radius, with vernier tangent screw and clamp, trade labels for 'William Desilva, Liverpool' and 'Giovanni Canz, Trieste' in keystone shape case (telescope and accessories missing)

細節
An early 19th century and brass octant the maker's ivory plaque signed 'Moon Junr West India Dock Rd LONDON', the frame with ivory scale, four shades, mirrors, telescope mounting socket, the index arm -- 9 5/8in. (24.5cm.) radius, with vernier tangent screw and clamp, trade labels for 'William Desilva, Liverpool' and 'Giovanni Canz, Trieste' in keystone shape case (telescope and accessories missing)