Add this shop to my favorites. "International Philatelic Exhibition of Paris 1937".Block issued by France in 1937 referenced YT No. On the occasion of the International Philatelic Exhibition of Paris 1937 (PEXIP). Ceres postage stamps from 1849 gathered in a central cartouche on a sheet of 150 x 220 mm. Postage stamps printed in vertical pairs separated by an interval bearing the mentions.3 in very good overall condition. Mint block without hinge with superb gum. PEXIP block guaranteed authentic by our experts. YT: Yvert et Tellier (catalog of references and valuations).