Hello fellow enthusiats, I'm fairly new to the game of collecting G1's. I have an Excelled G1 from 2007 and got a chance to acquire a Brill Bros G1 from 1968 (at least according to the tag) in a very good condition. It is supposed to be a D-series. After searching through the forum all I could find was, that the D-series jackets should be goat. But looking at the jacket and comparing to me Excelled G1 from 2007 it seems to be made out of cowhide with pressed goat texture because the two jackets are so similar in texture. Also it lookings nothing like the goat I have seen on goatskin G1s from the same or other manufacturers. Also it squeaks quite badly and loudly. Will conditioning the leather help with that problem? I was hoping one of the more experienced collectors among you could give me their point of view on the matter. Thank you in advance.