Im parting ways with alot of my single six stuff to make room for my carbine collection. here's a Factory Tri-color "S" gun ser# 107. just owning a 3 digit is remarkable, yet a 3 digit "S" gun. yes its listed in the book. $4500 or trade up or down on early Ruger Carbine, Deerstalkers, 1022 thru 1971 or any early checkard gun. FNC