Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | 100th anniversary Bulgarian state railways |
| Nominal: | 42 ст |
| Year: | 1988 |
| Size: | 54.5 x 29.5 mm |
| Perforation: | comb 11 |
| Mintage: | 800,100 |
100th anniversary Bulgarian state railways
 Yantra Locomotive - 1888 0.11$ |  Hristo Botev Locomotive - 1905 0.07$ |  Steam Locomotive - 1918 0.1$ |  Steam Locomotive - 1943 0.06$ |
 Diesel Locomotive 1963 |  Electric Train 1979 |