An early 20th century sextant by J. Coombes Devonport UK with original certificate. Lacquered brass frame with adjustable telescopic socket, seven shades and mirrors, the index arm with magnifier and vernier, tangent screw adjustment and clamp, the arc with an engraved silver scale, radius 25 cm, the mahogany case with fitted accessories, the lid engraved Wilfred Pearse Gandell, R.N