Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | 50 Years Bulgarian Post Office Savings Bank |
| Nominal: | 4 лв |
| Year: | 1946 |
| Perforation: | comb 11½ |
| Mintage: | 1,000,000 |
50 Years Bulgarian Post Office Savings Bank
 Symbol of Savings Bank |  First postal Savings Card |  Saving Child |  Building the Post Office Savings Bank |