US 1977
COLORADO
Rocky Mountains and Columbine, the state flower.
The "Centennial State" achieved statehood in 1876.
Water Activated Gum
Scott 1711
Perforated 11
Lower Right Stamp Mr. Zip Block of 4
Mint Never Hinged - Perforations do not run through the sheet margin on about 10% of the sheets of this issue! Scarce.
