b'51Rest of the WorldStamps & Postal HistoryThematicsex 312 ex 313312P Agriculture - Proofs: Algeria 1989 Fruit & Vegetables complete set of imperforate colour separations for the three denominations affixed to two pages from the printers records. Ex Courvoisier Archives. (18 proofs) $250300313P Agriculture - Proofs: Colombia 1950 Rural Life Courvoisiers original colour trial printings & completed designs all imperforate and affixed to the official Archival album pages [#40 & 41], dated 19/12/1949 and showing the designer as Hans Schwarzenbach. Beautiful & unique (18 items). $400500ex 314 ex 316314P Flowers & Plants - Proofs: Algeria 1969 Flowers Issue, Courvoisiers original colour separations and completed designs, all imperforate and affixed to the official Archival album page [#1006], dated 30/10/1968. Beautiful and unique. (25 items). $400600315P Flowers & Plants - Proofs: Algeria 1972 Flowers Issue, Courvoisiers original colour separations and completed designs, all imperforate and affixed to the official Archival album page [#1261 & 1262], dated 17/2/1972. Accompanied by the issued perforated stamps. Beautiful and unique. (15 imperfs + 3 issued stamps). $300400316P Flowers & Plants - Proofs:Algeria 1973Flowers Issue, Courvoisiers original colour separations and completed designs, all imperforate and affixed to the official Archival album page [#1372], dated 12/12/1973. Beautiful and unique. (20 items). $400600'