Austrian-born composer (1874–1951) whose development of the “twelve-tone” system proved to be one of the most far-reaching innovations in the history of twentieth-century music. Scarce vintage 3.5 x 5.5 German postcard photo, signed in the lower border in fountain pen. Light surface impressions along right side, some scattered light silvering and soiling, and a few minor bends, otherwise fine condition. Rare in this format. Pre-certified PSA/DNA and RRAuction COA.