Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Day of the child |
| Nominal: | 4 лв |
| Year: | 1951 |
| Perforation: | line 10¾ |
| Mintage: | 100,000 |
Day of the child
 Creche |  Children in Day Care |  Children's Playground |  Children's Village 1$ |