Hungary
| Country: | Hungary |
| Type: | Postage stamps |
| Series: | 100th Anniversary of the Metric System in Hungary |
| Nominal: | 3 Ft |
| Year: | 1976 |
| Size: | 34 x 44 mm |
| Perforation: | comb 11½ x 12 |
| Mintage: | 367,532 |
100th Anniversary of the Metric System in Hungary
 Legal regulation of the metric system, original meter 0.04$ |  István Kruspér, Designer of the Vacuum Balance 0.03$ |  Interferometer, rocket, emblem |