| LEGEND | Bid Sheet (English) | Ordre d'achat (Français) |
| Lot No | Type | Description | Price |
| 4644 | ESS | (Image) ARGENTINA (1963) Stylized torch*. Set of 3 trial color proofs in different colors. 10th Latin-American Neurosurgery Conference. Scott No 752, Yvert No 676. Not easy to find! | AVAILABLE AT $60 |
| 20671 | ESS | (Image) ARGENTINA (1963) Stylized flame*. Set of 3 imperforate trial color proofs in different colors. 10th Latin-American Neurosurgery Congress. Scott No 752, Yvert No 676. Small hinge remnant on back. Scarce! | AVAILABLE AT $50 |
| 2579 | ESS | (Image) ARGENTINA (1964) UPU emblem*. Trial color proof pair. 15th UPU Congress. Scott No C93, YvertNo PA98. | AVAILABLE AT $25 |
| 5475 | ESS | (Image) ARGENTINA (1967) Stagecoach*. Set of 3 trial color proofs in various colors. Centenary of Villa Maria (Cordoba). Scott No 842, Yvert No 796. | AVAILABLE AT $35 |
