Fender Tag Decoding '75 Duster

I'll do what I can to bring it back, but it's pretty rough, especialy in the back end, even the tail-light panels rusted! But it's not to far gone I don't think. What I'd like to do is track the owners back to the3 fellow who customized it, just to see what the deal with the "Dusty Rose" and rose picture etched onto the rear quarter windows is....