I found an old En-Ar-Co board game in a bunch of things I was going through at my in-laws home. It has a thin cardboard game board, a small spinner and 4 small, round cardboard tokens that have pictures of cars on them. It's in an envelope with what I assume is a logo for The National Refining Co., of Cleveland Ohio. The return address on the envelope is L.B.Gerrard, Salesman
National Refining Co. Macksville, Kansas.
The copyright date on the game is 1919. The game was patented on April 29, 1919.
Does this have any collectable value?