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Details
A miniature nickel-plated sphygmograph,
signed on the underside Maw Son & Thompson LONDON No.1741, with a separate screw attachment stamped 12, in purple plush-lined leatherette case -- 27/8in. (7cm.) wide
See Illustration
signed on the underside Maw Son & Thompson LONDON No.1741, with a separate screw attachment stamped 12, in purple plush-lined leatherette case -- 27/8in. (7cm.) wide
See Illustration