Quoted from Grinder901:It's from Pingraffix. They no longer make them. I have one on mine.
Brock (pinball_customs) said he was going to design a new one so hopefully that's revealed soon
We still make the Iron Man speaker panel and you can still order it on our web site. Although we did change the design a bit. We originally printed on metallic vinyl, but we discovered that it's very hard to work with, very expensive and it's always on back order. Now we're just printing on traditional vinyl. http://www.PinGraffix.com