| LEGEND | Bid Sheet (English) | Ordre d'achat (Français) |
| Lot No | Type | Description | Reserve | Estimate |
| 19969 | ESS |
MOROCCO (1958) UNESCO building. Mohammed V. Trial color proofs in strip of 5 with multicolor. Scott No 25, Yvert No 386.
| $60 | $80 |
| Lot No | Type | Description | Reserve | Estimate |
| 19977 | EA |
NIGER (1966) Water cycle. Die proof in black signed by the engraver GAUTHIER. Hydrological Decade. Scott No 167, Yvert No 173.
| $100 | $120 |
| 19979 | EA |
SENEGAL (1967) Urban water pipes. Die proof in black signed by the engraver COMBET. Hydrological Decade. Scott No 283, Yvert No 288.
| $100 | $120 |
| 19980 | EA |
CHAD (1968) Water carrier. Wells. Fields. Die proof in violet on watermarked paper (rare) signed by the engraver DECARIS. Hydrological Decade (UNESCO). Scott No 154, Yvert No 152.
| $100 | $120 |
| 19981 | EA |
GABON (1968) Dam. Power station. UNESCO emblem. Die proof in dark violet on watermarked paper (rare) signed by the engraver JUMELET. Hydrological Decade (UNESCO). Scott No 227, Yvert No 226.
| $100 | $120 |