This wonderful dish is marked on the back "Joint Exhibit of Capital and Labor - The American Potter - New York - World's Fair - 1940". This is in a circle. Homer Laughlin made these dishes or coasters. That is why this one is Fiesta Green. This particular coaster is "Spring" and is marked at the bottom front. It has a 4-3/8" diameter and is 7/8" thick. The four season dishes are hard to find.
This dish was used. There are no chips or cracks.
New York World's Fair 1940 The American Potter Spring Dish Fiesta Green HTF