Unofficial LEGO Sets/Parts Collectors Guide - Among many LEGO Train collectors, the golden age was 1980-1990... the 12V electric train years. And probably the most popular was the 7740 Intercity Train (not
LEGO vintage 12V Trains 7740 Inter-City Passenger Train with original box, RARE | eBay
LEGO Postal Container Wagon Set 7819 | Brick Owl - LEGO Marketplace
Vintage Lego 7740 Inter City Passenger Railway Train Engine & Carriages 1980's | eBay
LEGO MOC 7740 (updated) by mikalagrand | Rebrickable - Build with LEGO
Inter-City Passenger Train : Set 7740-1 | BrickLink