Stamps
Scott: 742 A312
Scott: C432 A312
Scott: 1107 A525
Scott:
One of the most famous numbers which represents the ratio of the circumference of a circle to its diameter. This irrational number is thought to be normal (all digits occur with the same frequency, for any base) though it has not been proven.
| Stamp | Description |
|---|---|
|
Columbia, 10c, 1961 Scott: 742 A312 |
|
Columbia, 2d, 1961 Scott: C432 A312 |
|
Columbia, 180p. 1994 Scott: 1107 A525 |
|
Hong Kong, China, 2.90, 2015 Scott: |