Wilson Caramel size 16 trench coat Vintage

I received this a a gift in 2010 from a co-worker that could not wear it any more. She advised me she bought this in the 70's. I have searched this and yes, this is a true 1970s era coat. Cherish it please, I now find myself unable to wear it and I have not worn it in 3 years. Approximate Measurements Pit to pit 20