Herrmann, Albert — Typed Document, Signed
Firmato
Mähr-Ostrau, Germany: ND. Typed document, signed. From Albert Herrmann, Mähr-Ostrau [Germany]. Undated. Patent for new propeller design to increase flight speed. Signed in pencil. Pencil notations, apparently by Caproni, expressing interest. 8-1/4 x 12-5/8 inches. Perforated twice for insertion into binder. Folded once horizontally and once vertically for mailing. Small tear at bottom edge; paperclip shadow at upper left. Very Good. Also attached is a drawing of the proposed design, stamped with Hermann's name and address. 7 x 6-1/4 inches. Very Good. .
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Numero libro:
67-0674
$250.00 (€226.83 | £189.24 | ¥39,922)
