Baldwin's of St. James's
Auction 57 14 Apr 2021
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The Portland Collection, Commemorative Medals, Ballooning: Denmark, Kongelig Dansk Aeroklub [Royal Danish Aero Club - Aéro Club Royal du Danemark], 20th Anniversary and the F.A.I. 'Conférence Plénière', Copenhagen, bi-plane, dirigible and hot-air balloon above Danish coast-line and castle, rev. legend and club emblem, 63.5 x 44mm. (Malpas 233), extremely fine