Have a 1957Lionel HO gage set up in the attic. My dad bought it when I was born. Never mounted on a board. Have all the boxes for the cars and track, but the cellophane in them is gone. They all fit in a box that could be opened as a display box and also have the literature that came with it. Made sure that my mom never threw it out or sold it at a garage sale. I remember my dad said he paid about $35 for it then. I talked to someone on the internet about 10 years ago and he said it was worth about $500-750 then.