VTG Cast Metal Train Engine & Car Miniatures Milestones in History Collectible. Each car notes a milestone in history, such as moon landing, invention of tv, web, popular Elvis rock n roll, etc., interesting, see pics. I believe this little train was a company’s marketing sales item and once a month for a year a new rail car was issued, therefore there are 12 pieces. Wheels do not turn. These pieces are about an inch in size, see pics. Condition is Used, shows minimal wear. Shipped with USPS Priority.