Excellent choice with Embryon! I wish I would have had these a while back when I restored one. Had I known, I could have shot you a scan of the original key chain. I happened to grab one off of Ebay when I had my game. First time I had ever seen it. Bought it off an old Bally employee. Hopefully the playfield will follow some day, as I'm sure there are plenty of games out there in need of help. All the ones I ever see are quite worn.