On the occasion of the Philatelic Exhibition International of Paris 1937 (PEXIP). Ceres postage stamps from 1849 gathered in a central cartridge on a sheet of 150 x 220 mm. Postage stamps printed in vertical pairs separated by an interval bearing the mentions. Block of stamps N°3d in very good overall condition. First day cancelled block signed Calves.
Block with top perforation (variety). To be noted: block without gum. PEXIP block guaranteed authentic by our experts. YT: Yvert and Tellier (catalog of references and valuations).