Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Princess Marie-Luise |
| Nominal: | 4 лв |
| Year: | 1937 |
| Perforation: | line 11½ |
| Mintage: | 500,000 |
Princess Marie-Luise
 Princess Marie Louise |  Princess Marie-Luise |  Princess Marie-Luise |