A hand written personal letter from Guglielmo Marconi, with full signature

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Sold Date 2026 full date locked

Source BLACKWELL AUCTIONS, LLC, Clearwater, FL, USA

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Description

A hand written personal letter from Guglielmo Marconi, with full signature. The letter mentions the TELEGRAPHONE, a machine invented by Valdemar Poulsen which recorded sound magnetically on steel wire, and the possibility of its use in his experiments. Marconi was an Italian inventor and engineer who is credited as the...

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