Superb vintage matte-finish 4.25 x 4.25 circular profile portrait of the radio and telegraphy pioneer, affixed to its original 5.75 x 9.25 studio mount, signed and inscribed on the mount in bold fountain pen, "To Captain R. G. McConnell, with very kind regards, Guglielmo Marconi, Honolulu, November 1933.” Framed and in fine condition.
This item is Pre-Certified by PSA/DNA
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