Manufactured in 1876 as a third model with the serial number stamped in block numerals behind the trigger. The sights consists of a blade integral to the front barrel band and two leaf rear sight. A saddle ring is mounted on the left side of the brass receiver. The bolt remains in its original rimfire configuration. The carbine stock is fitted with a trapdoor brass buttplate. Comes with a three piece cleaning rod. The '66 secured Winchester's place in the annals of the West and launched a long line of successful Winchester lever actions that remain popular to this day and still retain the basic form of the '66.

Very good plus. The barrel and magazine tube have a smooth dark brown patina. The brass has an attractive patina. The wood is also very good with a couple hairline stress cracks at the tangs and minor-moderate dings and scratches. The lever lacks tension to remain parallel with the lower tang, otherwise mechanically excellent.