Ink signature, “Guglielmo Marconi, 18 Finch Lane, Threadneedle Street, London (England),” on an off-white 5.5 x 5.5 sheet of clipped Waldorf-Astoria stationery. In fine condition, with light creasing and trimmed edges. Accompanied by its original Walter Benjamin folder. Pre-certified PSA/DNA.
This item is Pre-Certified by PSA/DNA
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