|
| 521 |  | 0.15$ Agricultural Machinery2 pc 1,000 $ 1991  Mexico |
| 522 |  | 0.03$ Barn Owl (Tyto alba)3 pc 80 Ct. 1991  Switzerland |
| 523 |  | 0.03$ Domestic Rabbit (Oryctolagus cuniculus domesticus)2 pc 70 Ct. 1991 Switzerland |
| 524 |  | 0.19$ 700 Years Swiss Confederation - Swiss Cross1 pc 50 Ct. 1991 Switzerland |
| 525 |  | 0.19$ 700 Years Swiss Confederation - Swiss Cross1 pc 50 Ct. 1991 Switzerland |
| 526 |  | 0.06$ 700 Years Swiss Confederation - Swiss Cross1 pc 50 Ct. 1991 Switzerland |
| 527 |  | 0.09$ 700 Years Swiss Confederation - Swiss Cross1 pc 50 Ct. 1991 Switzerland |
| 528 |  | 0.44$ Contemporary art: Matthias Bosshart (1950-)1 pc 80+40 Ct. 1991 Switzerland |
| 529 |  | 0.08$ Bridge of Natural Stone near Lavertezzo (16th Century)2 pc 50 Ct. 1991 Switzerland |
| 530 |  | 0.42$ Nettle-leaved Bellflower (Campanula trachelium)1 pc 80+40 Ct. 1991 Switzerland |
| 531 |  | 0.04$ Melchsee3 pc 80 Ct. 1991 Switzerland |
| 532 |  | 0.03$ Lake Moesola4 pc 50 Ct. 1991 Switzerland |
| 533 |  | 0.18$ The Living Tableau (Detail), Rivisondoli1 pc 600 ₤ 1991  Italy |
| 534 |  | 0.18$ EuroFlora '91 Fair, Genoa1 pc 750 ₤ 1991 Italy |
| 535 |  | 0.15$ Schools and Universities1 pc 750 ₤ 1991 Italy |
| 536 |  | 0.19$ Europees Youthtreffen1 pc 750 ₤ 1991 Italy |
| 537 |  | 0.67$ La Maddalena1 pc 600 ₤ 1991 Italy |
| 538 |  | 0.59$ Roccaraso1 pc 600 ₤ 1991 Italy |
| 539 |  | 0.65$ Cagli1 pc 600 ₤ 1991 Italy |
| 540 |  | 0.68$ Sanremo1 pc 600 ₤ 1991 Italy |
Piece: 1,710 (2,623)
Total: 1,100$+