I am not an EM collector but I would love to have a Royal Flush pin. One of the only EM games that my local arcade had in the late 1970's.
Pinball machines are like potato chips. You can not have just one. I hope you have room for several more, they tend to multiply quickly. I had my second pin within one week of my first game. The 3rd game came within a month. Within the first year I have over 15. I have sold/trades/bought a lot of games over the years (over 200) but I still have my first game that I bought.