Unofficial LEGO Sets/Parts Collectors Guide - The LEGO 12V Electric Trains of the 1980s were very popular among LEGO train collectors. The 1970s 12V trains (starting in 1969) were only sold in
LEGO 7740 Inter-City Passenger Train Set Instructions, Trains
LEGO Trains 1980 | Brickset
LEGO Instructions from 1980
LEGO 7740 Inter-City Passenger Train Set | BrickEconomy
Inter-City Passenger Train : Set 7740-1 | BrickLink
LEGO Trains 1980 | Brickset
7865-1 Motor Replacement Unit for Battery or Motor-Less Trains 12V Reviews - Brick Insights