New Girl, Awesome Find, Need Advice
 

OK so here's the deal. In the process of moving I went through a box of very old stuff from my parents and found some stuff I didn't even know was in there. Including 2 unopened, original packages of Splash Guards from the mid 1970's. I have contacted several collectors in the area and they have estimated them to be worth $150-$200 per set. They are from the National Finals Rodeo when it was still held in OKC, OK (last year was 1984) and still sponsored by the Winston Rodeo Awards (that stopped around the mid to late 70s). Does anyone have any idea on how to accurately value these or anyone that I might could get in touch with that would? One of the places I called said to post it on here and that someone on here would know, so they have a lot of faith in you all and I do to. This could really be an answer to my prayers right now!
I attached a couple of photos also and it appears that all of the hardware is with them also. I can't swear to it because I don't want to open the packaging. Any help would be GREATLY appreciated!