Set from three silver medals modern embossment (2. H. 20th century) on the three air ships Count Zeppelin, Shenandoah ZR-1 and Hindenburg, aversum in each case with the airships, reverse with scenic depicting US events declaration of Independence 1776, Birth of a nation 1787 and Sehenandoah Valley Campaign 1862, partial turquois black patina, PP.