Friedrich Haller & Söhne X-ray. Munich, 1897. Primitive attempt to authenticate a painting by Albrecht Dürer using X-rays discovered by Wilhelm Röntgen. Negative and positive X-rays of a presumed painting by Albrecht Dürer, "Der segnende Heiland" (Christ with crown of thorns). Female pelvis with metal rod in hip. Pelvis of a 12-year-old boy. Skull of a 42-year-old woman. Male hand. Body of a 13-month-old child. Male hand obtained in 3 minutes. In-folio portfolio (31 x 41 cm) with flaps, consisting of nine (9) albumen prints, laminated on studio card (6 mounted in pairs). Numerous ink annotations in German on the mounts. Signature "Armin Flümthal" in one negative [man's hand]. Sizes: from 6.5 x 6 to 34.5 x 23.5 cm The study conducted by Oscar Lochner in 1894 is enclosed: Oskar Freiherr Lochner von Hüttenbach (1868-1920) Ein neu aufgefundenes Gemälde Albrecht Dürer's der segnende Heiland. Hugo Spamer. Berlin, 1894. In-4 (26 x 18 cm). Brochure, 10 pp. First edition.