1980s Colorado Coffee Mugs Black and Gold

Of these two mugs, only the eagle mug is dated; it has ‘CSI 86’ beneath the image. The skyline mug is not dated but I am guessing based upon the style they are both from the 80s. Both have scuffing to the gold but it is not particularly noticeable unless one goes looking for imperfections. Both have signs of use as to be expected for 30 year old mugs but both are presentable and make a very cool set. No noticeable chips that I can detect.