Bulgaria
Yellowish Pulp Paper, yellow Rubber
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Postage Due 1915 Numbers |
| Nominal: | 20 ст |
| Year: | 1915 |
| Size: | 23 x 28 mm |
| Perforation: | line 11½ |
| Mintage: | 500,000 |
