I don't believe I have seen this vintage Plarail C62 before and I know I haven't seen a brown box like that. Looks to be an old friction drive metal motor with the switch in front of the engine. I always wondered where those stubby Esso tankers came from. Look at that hefty price...200,000yen. Wonder what year this was released in that brown box.
http://www.jauce.com/auction/o182417503
http://www.jauce.com/auction/o182417503