Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | International Stamp exhibition 'SOFIA 1969' |
| Nominal: | 20 ст |
| Year: | 1969 |
| Perforation: | comb 13¼ x 12¾ |
| Mintage: | 180,000 |
International Stamp exhibition 'SOFIA 1969'
 Sailing ship 0.08$ |  Postal Coach 0.07$ |  Old Steam Locomotive |  Car |
 Air Ballon |  Aircraft |  Jet Aircrafts |  Rocket, Space Station, Space 3.1$ |
 Ancient Postal Rider |