As you probably know by now, I make restoration front and rear panels for metal face JMP era Marshalls. I'm working on expanding into making plexi panels as well. While there are some places that you can already get SOME replica plexi panels, I propose to offer the ones that others aren't making. Such as correctly marked rear panels for Super Bass, Super Tremolo, Super Lead, Master volume versions of those with script lettering, Majors, etc. I've had very little exposure to the Major models as of yet. So here's the question: Which versions and years featured metal face and rear panels? Which versions and years featured plexi face and rear panels? I can't just ASSUME that they are all plexi. Majors were made after 1969, but I can't assume that they transitioned to metal panels as did the Super Lead at that time.