RUGER COLORADO CENTENNIAL SUPER SINGLE SIX Description
similar to Super Single Six Convertible, except produced to commemorate the 100th anniversary of Colorado statehood, 15,000 mfg. 1975 only, includes walnut case with medallion insert, stainless steel grip frame, rosewood grips, both cylinders roll marked with the Colorado Centennial motif, 6 1/2 in. barrel, issue price was $250.
At least one known example has been uncovered of this model having the "MADE IN THE 200th YEAR OF AMERICAN LIBERTY" rollmark on the barrel in addition to the standard Colorado Centennial/US Bicentennial rollmark and the Sturm, Ruger & Co., Inc. rollmark.