Болгария
| Страна: | Болгария |
| Тип: | Почтовые марки |
| Серия: | International Stamp exhibition 'SOFIA 1969' |
| Номинал: | 20 ст |
| Год: | 1969 |
| Перфорация: | comb 13¼ x 12¾ |
| Тираж: | 180,000 |
International Stamp exhibition 'SOFIA 1969'
 Sailing ship 6 руб |  Postal Coach 6 руб |  Old Steam Locomotive |  Car |
 Air Ballon |  Aircraft |  Jet Aircrafts |  Rocket, Space Station, Space 250 руб |
 Ancient Postal Rider |