| LEGEND | Bid Sheet (English) | Ordre d'achat (Français) |
| Lot No | Type | Description | Price |
| 3051 | ESS | CONGO (1973) Automatic control room*. Trial color proofs in margin band of 5 with multicolor. Scott No 281, Yvert No 331. Scarce! (Image a) | AVAILABLE AT $75 |
| 3052 | ESS | CONGO (1973) Kronenbourg Laboratory*. Trial color proofs in margin band of 5 with multicolor. Scott No 279, Yvert No 329. Hard to find! (Image a) | AVAILABLE AT $75 |
| 12038 | ESS | CONGO (1973) Kronenbourg brewery*. Complete set of 6 trial color proof pairs. Scott Nos 278-83, Yvert Nos 328-333. (Image a) (Image b) | AVAILABLE AT $80 |
