China
| Country: | China |
| Type: | Postage stamps |
| Series: | Glorious Mother Country (4th issue) |
| Nominal: | 800 Chinese dollar |
| Year: | 1953 |
| Size: | 43 x 27 mm |
| Perforation: | line 14 |
| Mintage: | 5,000,000 |
Glorious Mother Country (4th issue)
 Oldest Compass |  Instrument for Earthquake Measurement 0.64$ |  Drum Cart to Measure Distance 0.29$ |  Astronomical Instrument 0.27$ |