Sheets of San Marino, 2004
| Issuer | Date | Desc | State | ||
| - |  |
San Marino | 4/16/2004 | PRC 55th, sheet of 3 types | all added |
| - |  |
San Marino | 8/20/2004 | Rimini meeting 25th, sheet of 4 types | all added |
| - |  |
San Marino | 11/12/2004 | La Scala reopening, sheet of 3 types | all added |