This carbine was manufactured in 1869 and was later converted to centerfire. The "Yellowboy" Model 1866 was the first Winchester, and the '66 carbines were particularly sought-after for use in the Old West and continued to see widespread use alongside the earlier Henry rifles and the later Model 1873s. The Model 1866 was particularly popular with various Native American groups and is known to have been used in multiple historically significant battles, including the Battle of Little Bighorn.

Good overall "frontier issued" appearance with gray patina on barrel and magazine, pitting, antiqued brass with cleaning wear, cracks on forearm, and a well-worn replacement buttstock with missing wood at toe. Mechanically functions.