I went to an auction for Lionel Trains, and this American Flyer Green Diamond was sitting there in a tray. I had seen one once before, but could never afford them. Somehow, I got it for cheap, and then I did some research and found that most of them I found had a lower coupler, which mine doesn't have (doesn't even have the holes). Mine also doesn't have grill painted the silver/gray color. I think it's an early production with a factory error, as it does not look restored at all. Either way, it's a fun piece.
A video with some photos at the end:
