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Auction: 326 - The Numismatic Collector's Series Sale
Lot: 1362

Dynamograph Company (Tennessee) 1889. Philadelphia. 25 shares. No.1073. Woman holding lightning stands on globe. VF. A small piece is missing from the margin at lower left. The dynamograph was one of the first medical instruments used to measure muscular force. This is the only example of which we are aware.

Estimate
$150 to $250