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Leonid I. Sedov principal engineer behind the Soviet Sputnik project, "father of Sputnik" Signature on a letter of a collector, 4 x 4 inch, signed by Leonid I. Sedov in black ink, in very fine condition. size in inch 4 x 4 Shipping and packing = 12 $ *Authenticity* We do not offer any Autopen-, Secretarial-, Stamped- or Pre-Print autographs. We stand 100% behind every item and can provide in most cases history where and when they have been obtained. Of course every item come with a pictured Certificate of Authenticity and lifetime guarantee. We have maybe one of the largest reference librarys in Europe and working extremly careful and serious in this matter. Please do a google search for "brandesautographs" and take a look to our website where you can read about autograph huntings, autograph news, fake autographs, collecting events and much more !