Sheets of Czechoslovakia, 1986
| Issuer | Date | Desc | State | ||
| - |  |
Czechoslovakia | 6/3/1986 | Praga '88 in 1986, sheet of 1 type | incomplete |
| - |  |
Czechoslovakia | 6/3/1986 | Praga '88 in 1986, sheet of 1 type | all added |
| - |  |
Czechoslovakia | 6/3/1986 | Praga '88 in 1986, empty sheet (#4008) | incomplete |
| - |  |
Czechoslovakia | 6/6/1986 | sheet of 1 type | all added |
| - |  |
Czechoslovakia | 6/6/1986 | sheet of 1 type | all added |
| - |  |
Czechoslovakia | 10/1/1986 | 50th Anniversary of Formation of International Brigades in Spain, sheet of 2, 1 type | |
| - |  |
Czechoslovakia | 10/13/1986 | empty sheet (#4005) | incomplete |