LEGO vintage 4.5V Steam Cargo Train set from 1985! set 7722 - YouTube
Train Battery Box Car with Red Switch and Black Wheels with 'DB 7722' and Weight Table Pattern on Both Sides (Stickers) - Set 7722 (Undetermined Type) : Part x488c02pb01 | BrickLink
LEGO 7722 Steam Cargo Train Set Instructions, Trains
LEGO Trains: Steam Cargo Train Set (7722) for sale online | eBay