HERGÉ. The Adventures of Tintin - The Secret of the Unicorn. Casterman, 1950. Album in-4, polychrome publisher's cardboard, red back, 4th plate B7, dark blue endpapers. Rare cover "with brown medallion". (boards, spine, headpieces and corners rubbed, traces of red pencil on the first board and slight stain, cracks in the spine, soiling in the margins, slight reinforcement of internal scotch, label stuck on the title page)