Czechoslovakia
0.09 - 0.11$
price on 06.12.2022
| Country: | Czechoslovakia |
| Type: | Postage stamps |
| Series: | Engineering Schools in Prague, 250th Anniversary |
| Nominal: | 30 h |
| Year: | 1957 |
| Size: | 27 x 33 mm |
| Perforation: | comb 11½ |
| Mintage: | 4,590,000 |
Engineering Schools in Prague, 250th Anniversary
 Josef Božek (1782-1835) 0.09$ |  F. J. Gerstner (1756-1832) 0.2$ |  Rudolf Skuherský (1821-1863) 0.12$ |  School of Engineering in Prague, 250th anniv. 0.17$ |