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Dudgeon's sphygmograph by Hawksley, London
England , 1890
Dudgeon's sphygmograph by Hawksley, English, c.1890, the clockwork housing engraved 'T. P. Hawksley 357 Oxford St London', with clockwork mechanism to one side, dark fabric wrist strap, in original black leather covered case, lined in purple velvet, with the trade logo inside the lid.