Produced by Lionel in 1977. NORTHERN PACIFIC BAY WINDOW CABOOSE, uncataloged, black and gold sides, yellow hash marks, red lettering, red, black and white Monad decal, gold ends and roofs, die-cast O-27 passenger trucks. 'BLT 1-77". This was the second caboose to be made with the NP markings in 1976-1977.