Indonesia
| Country: | Indonesia |
| Type: | Postage stamps |
| Series: | International Geophysical Year |
| Nominal: | 50 Indonesian sen |
| Year: | 1958 |
| Perforation: | 12¼ |
International Geophysical Year
 International Geophysical Year |  International Geophysical Year 0.15$ |  International Geophysical Year |  International Geophysical Year |
 International Geophysical Year 0.15$ |