UBANGI-CHARI - Proof (1930) Emile Gentil. Imperforate proof in blue windowed on car stock. Scott type D4. (Image)

U.S.A. - Proof (1945) Alfred E. Smith. Photo essay of final design commemorating NY governor and presidential candidate. Scott No 937, Yvert No 488. Rare! (Image)

MONACO - Artist proof (1955) Blessed Rainier. Die proof in brown signed by the engraver SERRES. Scott No 352, Yvert No 439. (Image)

MONACO - Artist proof (1957) Princess Grace. Die proof in brown signed by the engraver GANDON. Scott No 396, Yvert No 483. (Image)

GERMANY - Proof (1957) Baron vom Stein. Archive photo (See Note) of unaccepted design for Prussian statesman whose reforms led to the unification of Germany. Scott No 776, Yvert No 149. (Image)

GERMANY - Proof (1957) Statue of Baron vom Stein. Archive photo (See Note) of unaccepted design for Prussian statesman whose reforms led to the unification of Germany. Scott No 776, Yvert No 149. (Image)

GERMANY - Proof (1959) Theodor Heuss. Archive photo (See Note) of unaccepted design for first president of Federal Republic. Scott No 794, Yvert No 174. (Image)

MOROCCO - Deluxe proof (1964) King Hassan II. Deluxe sheet. Scott No 111, Yvert No 440b. (Image)

GERMANY - Proof (1964) Heinrich Lübke. Archive photo (See Note) of unaccepted design. Scott Nos 881-2, Yvert Nos 305-6. (Image)

CONGO - Deluxe proof (1965) President Massamba-Debat. Set of 3 deluxe sheets. Scott Nos 126-8, Yvert Nos 172-4. (Image)

UPPER VOLTA - Deluxe proof (1965) President Yameogo. Deluxe sheet, Scott No 145, Yvert No 147. (Image)

IVORY COAST - Deluxe proof (1965) President Houphouet-Boigny. Map of Cote d'Ivoire Deluxe sheet. Scott No 230. Yvert No 237. (Image)

MADAGASCAR - Deluxe proof (1965) President Tsirinana. Set of 2 deluxe sheets. Scott Nos 369-70, Yvert Nos 408-9. (Image)

GERMANY - Proof (1965) Otto von Bismarck. Archive photo (See Note) of unaccepted design for 150th anniversary of birth.. Scott No 918, Yvert No 334. (Image)

GABON - Deluxe proof (1965) President Mba. Deluxe sheet. Scott No C37, Yvert No PA39. (Image)

DAHOMEY - Artist proof (1970) Matheo Lopes, ambassador. Die proof in dark violet signed by the engraver BEQUET. Louis XIV mission. Scott No 272, Yvert No 292. (Image)

DAHOMEY - Artist proof (1970) Alkemy, King of Ardres. Die proof in black signed by the engraver BEQUET. Louis XIV mission. Scott No 273, Yvert No 293. (Image)

GERMANY - Proof (1971) Gustav Heinemann. Archive photo (See Note) of unaccepted design. Scott No 1051, Yvert No 509. (Image)

GERMANY - Proof (1972) Kurt Schumacher. Archive photo (See Note) of unaccepted design. Scott No 1093, Yvert No 584. (Image)

BOLIVIA - Imperforate (1981) Princess Diana. Prince Charles. Stamps. Imperforate S/S. Michel Block 119. (Image)

CENTRAL AFRICA - Imperforate (1981) Charles & Diana. Set of 6 imperforate minisheets. Scott Nos 466-9,C251-2. Yvert Nos 479-82,PA283-4. (Image)

AUSTRIA - Proof (2016) Kaiser Franz Joseph I. Black print. (Image)