A late 19th-Century English lacquered-brass Grace's-pattern spectroscope, signed John Browning 63 Strand London and engraved Grace's Spectroscope , with adjustable prism via rack and pinion and turning wheel-operated draw-tube focusing, in the original shaped and plush-lined leatherette-covered case, the pale blue silk-lined lid with the gilt-tooled crest and maker's device for JOHN BROWNING -- 6½in. (16.5cm.) long See Colour Illustration
A late 19th-Century English lacquered-brass Grace's-pattern spectroscope, signed John Browning 63 Strand London and engraved Grace's Spectroscope , with adjustable prism via rack and pinion and turning wheel-operated draw-tube focusing, in the original shaped and plush-lined leatherette-covered case, the pale blue silk-lined lid with the gilt-tooled crest and maker's device for JOHN BROWNING -- 6½in. (16.5cm.) long See Colour Illustration
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
