on Lenox Museum Board, each signed in pencil, inscribed HC 13/15, an hors commerce set aside from the standard edition of sixty (there were also 15 artist's proofs), printed by Rupert Jasen Smith, New York, with his blindstamp, published and issued by the Bundesverband des Deutschen Güterfernverkehrs, Frankfurt am Main, in collaboration with Hermann Wünsche, Bonn, with the artist's copyright stamp on the reverse
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