- Country
- United States
- Postal authority
- United States Postal Service
- Issue date
- February 12, 1968
- Face value
- 6 cents Commemorative issue Illinois statehood sesquicentennial
- Currency
- US dollar
- Issue
- Illinois statehood sesquicentennial
- Series
- Illinois statehood sesquicentennial
- Theme
- Nature · Industry and economy · Architecture
- Denomination type
- Fixed denomination