Manufactured in 1956. Single bead sight, standard barrel markings, Winchester WP" proofs on the barrel and receiver at the breech, serrated trigger and hammer lock, groove top receiver for scope mounting, and matching numbers on the receiver and trigger guard assembly. A similar "straight through" smoothbore rifle is pictured on page 48 of "Winchester Slide Action Rifles: Volume II" by Ned Schwing and Schwing notes that they may be rarer than the scarce Routledge bored rifles! 17 groove slide handle and smooth pistol grip stock with checkered blue steel buttplate.