Bulgaria
No. PK10 in changed color
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Packet postal service |
| Nominal: | 10 лв |
| Year: | 1942 |
| Material: | coated |
| Perforation: | 13¼ x 12½ |
| Mintage: | 300,000 |
Packet postal service
 Scale |  Motorcycle 0.52$ |  Scale |  Postcar |
 Trainwagon |  Motorcycle |  Postcar |  Trainwagon |
 Scale 0.11$ |  Trainwagon 0.21$ |  Postcar 0.14$ |  Motorcycle 0.05$ |