| LEGEND | Bid Sheet (English) | Ordre d'achat (Français) | 
| Lot No | Type | Description | Result | 
| 3976 | EMA | 
 
ETATS UNIS (1950) Dammed river.   Red meter cancel on fragment. Pitney Bowes No 138747: "Whose Waters? Let the Supreme Court Decide."
 | 
AVAILABLE AT $15     | 
| 3977 | EA | 
 
ALGERIA (1957) Beni Bahdel dam.   Die proof in black signed by the engraver PHEULPIN.  Scott No C12, Yvert No PA14.  Rare!
 | 
AVAILABLE AT $150    | 
| 3978 | EA | 
 
LAOS (1972) Nam Ngum hydroelectric dam.   Die proof in blue signed by the engraver JUMELET.  ECAFE 25th anniversary.  Scott No 228, Yvert No 245.
 | 
AVAILABLE AT $140    | 
| 3979 | ESS | 
 
IVORY COAST (1972) Kossou Dam and Hydroelectric Plant.   Trial color proofs in strip of 5 with multicolor.  Scott No C53, Yvert No PA59.  Beautiful!
 | 
AVAILABLE AT $90     | 
| 3980 | EA | 
 
LAOS (1972) Nam Ngum hydroelectric dam.   Die proof in violet signed by the engraver MIERMONT.  ECAFE 25th anniversary.  Scott No C88, Yvert No PA88.
 | 
AVAILABLE AT $140    |