Tad Moore (majic) designed those clubs for several years - he's on WRX and should be able to help you.
Maxfli was a premium brand for Dunlop. Generally speaking, you're on firm ground with Australian Blades and Pro Specials. Other than that, it depends. Dunlop made some high quality clubs through the years when pretty much all irons were blade designs. There were some autograph models, and from memory red (and maybe also blue) flash clubs and quality varied from cheap storeline to pro line.
They shouldn't mind if you took some photos...