Lego’s first motorized train arrived in 1967, five years before this catalog was released, but the company continues to expand its railroad offerings to this day. The 4.5V electric train of 1972 more or less reflects the look of Lego’s earliest train models, hiding the chunky battery powering it in a trailing carriage. This set includes one additional carriage, a full circle of track, and a railroad crossing, and while in 1972 it was priced at 129.50 Danish Krone, it would have cost just over $18 in the U.S.