There IS a groan-worthy joke running around about the coin's design. At the risk of getting pummeled, here it is:
The reverse is a smaller version of the Mayflower on the Pilgrim Half. We know it's a smaller version, because is says "Mayflower Compact" and that is below the ship's design, so it's obviously the subcompact version. The full sedan size Mayflower is on the half.
I'll tiptoe out quietly now . . .