Hardback, dustwrapper, illustrated, 102 pages, complete with two folding plates, plus 1971 Nachtrag [Supplement], hardback, 64 pages, text in German, few short tears to the dustwrapper with loss of a few tiny pieces, ex-National Philatelic Society with library stamps at front, slight spine-lean, corners of front cover of the supplement somewhat rubbed, in Good condition.