| LEGEND | Bid Sheet (English) | Ordre d'achat (Français) |
| Lot No | Type | Description | Reserve | Estimate |
| 925 | VAR |
U.S.A. (1952) Grand Coulee dam. Misperforation resulting in bottom of stamp appearing at top. Scott No 1009, Yvert No 560.
| $40 | $50 |
| 926 | EL |
FRANCE (1969) Vouglans-Dura dam. Power lines. Deluxe sheet. Scott No 1233, Yvert No 1583.
| $25 | $30 |
| 927 | ND |
TOGO (1987) Nangbeto dam. Imperforate corner block of 4. Scott No 1417.
| $20 | $25 |
| Lot No | Type | Description | Reserve | Estimate |
| 1018 | EL |
GABON (1973) Kinguélé Dam & Hydroelectric Station. Deluxe sheet of triptych. Scott No C140a, Yvert No PA140a.
| $40 | $50 |
| 2785 | ND |
GABON (1968) Dam. Power station. UNESCO emblem. Imperforate pair. Hydrological Decade (UNESCO). Scott No 227, Yvert No 226.
| $10 | $10 |