U.S.A.-Entire (1902) Literature. Postal card (N) with printed announcement on back noting postponement of 'Sale of a Library of English, Classical and other Literature'. Hard to find! (ImageA)

FRANCE-Entire (1937) Printing. PTT letter (Cheques Postales) with ad on reverse for printer of catalogues, brochures, etc.. (ImageA)

FRANCE-Deluxe proof (1947) Fenelon. Deluxe sheet. Scott No 586. Yvert No 785. Missing the glassine overlay. (ImageA)

FRANCE-Deluxe proof (1949) Voltaire. Deluxe sheet. Scott No B239, Yvert No 854. (ImageA)

MONACO-Artist proof (1951) Edmond & Jules de Goncourt. Die proof in dark brown signed by the engraver GANDON. Scott No 261, Yvert No 352. 150th anniversary of Académie Goncourt. (ImageA)

MONACO-Artist proof (1951) Edmond & Jules de Goncourt. Stage die proof in black signed by the engraver GANDON and marked '1/6'. Scott No 261, Yvert No 352. 150th anniversary of Académie Goncourt. (ImageA)

MONACO-Artist proof (1955) Man on horseback. Russian castles. Die proof in black signed by the engraver SERRES. 'Michael Strogoff: Courrier to the Czar.'. Scott No 343, Yvert No 430. (ImageA)

MONACO-Trial Color Proof (1955) Cannon. Trial color proof full sheet of 25. The 500 Millions of Begum (also translated as The Begum's Fortune). Foretelling long-range cannon, terrorism, and orbiting bombs! Scott No 344, Yvert No 431 (ImageA)

MONACO-Trial Color Proof (1955) Jules Verne. Puma. Boats on Orinoco river. Trial color proof FULL SHEET OF 25. The Magnificent Orinoco. Scott No 345, Yvert No 431. (ImageA)

FRANCE-Artist proof (1955) Florian. Bicolor die proof (unsigned). Scott No 765, Yvert No 1021. (ImageA)

FRANCE-Deluxe proof (1960) Madame de Stael. Lyre. Deluxe sheet. Scott No 974, Yvert No 1269. (ImageA)

INDIA-Proof (1966) A.M.P. Dvivedi. Photographic proof from the archives of India Security Printers. These proofs were made before printing the stamps and often show levels of detail missing in the issued stamps. Scott No 435, Yvert No 207 (ImageA)

MONACO-Artist proof (1968) Chateaubriand* Combourg castle. Die proof in black signed by the engraver MONVOISIN. Scott No 698. Yvert No 758. (ImageA)

MONACO-Trial Color Proof (1968) Moor on horseback. Birds. Woman. Trial color proof strip of 5. Chateaubriand's 'Le Dernier Abencerrage'. Scott No 701, Yvert No 761. (ImageA)

FRANCE-Trial Color Proof (1968) Le Sage. Trial color proof pair. Scott No 1211, Yvert No 1558. Hard to find! (ImageA)

FRANCE-Trial Color Proof (1968) Larousse. Trial color proof. Scott No 1213, Yvert No 1560a. (ImageA)

MONACO-Artist proof (1969) Daudet. Birds. Caged birds. Stagecoach. Flowers. Die proof in black signed by the engraver BETEMPS. Letters from My Windmill. Scott No 747, Yvert No 796. (ImageA)

INDIA-Proof (1970) T. L. Vaswani. Photographic proof from the archives of India Security Printers. These proofs were made before printing the stamps and often show levels of detail missing in the issued stamps. Scott No 506, Yvert No 289 (ImageA)

INDIA-Proof (1970) Iswar Chandra Vidyasagar. Photographic proof from the archives of India Security Printers. These proofs were made before printing the stamps and often show levels of detail missing in the issued stamps. Scott No 522, Yvert No 305. Pillar of Bengali Renaissance. (ImageA)

MONACO-Artist proof (1970) Dumas. Scene from Three Musketeers. Die proof in black signed by the engraver FORGET. Scott No 778, Yvert No 839. (ImageA)

FRANCE-Artist proof (1972) Theophile Gautier. Die proof in violet signed by the engraver BEQUET marked 'ep. d'état.' . Scott No B459, Yvert No 1728. Very rare! (ImageA)

MONACO-Artist proof (1973) Molière. Scene from Le Malade Imaginaire. Die proof in black signed by the engraver DURRENS. Tricentenary of the death of Molière. Scott No 868, Yvert No 919. Only 19 exist. Rare! (ImageA)

FRENCH POLYNESIA-Imperforate (1973) Pierre Loti. Characters from his books. Corner imperforate. Scott No C99, Yvert No PA76. (ImageA)

MONACO-Artist proof (1975) Louis de Saint-Simon. Die proof in black signed by the engraver GANDON. Scott No 968, Yvert No 1010. (ImageA)

MONACO-Trial Color Proof (1975) Louis de Saint-Simon. Trial color proof full sheet of 25. Scott No 968, Yvert No 1010. Small (1.5cm) tear in bottom selvage. (ImageA)