Partly-printed DS, signed “Thos. A. Edison,” one page, 15 x 8, August 19, 1899. Stock certificate issued to Edison for one hundred shares of capital stock in The Edison Portland Cement Company, featuring a fabulous engraved portrait of the inventor at the top, signed on the receipt affixed to the left edge by Edison in black ink, “Thos. A. Edison,” and signed twice on the reverse, once at the top in black to correct the misidentified stockholder, “of Thos. A. Edison,” and signed again at the conclusion in green to approve the transfer of the stock, “Thomas A. Edison.” Expected document wear, a vertical crease passing through a single letter of the signature on the receipt, and cancellation stamps and holes (holes affecting one signature on the reverse), otherwise fine condition.
In addition to his more famous ventures, Edison was a pioneer in the use and manufacture of cement. After devising a method of using waste sand from his Edison Ore-Milling Company as the basis for a quality cement, he established the Edison Portland Cement Company in 1899. He experimented with many applications of his creation and believed it to be the stuff of the future, envisioning a world of concrete houses filled with concrete furniture, refrigerators, and even pianos. Representing this little-known aspect of Edison history and featuring three signatures—including a very scarce full example—this is a superlative piece. Pre-certified PSA/DNA.
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