Vintage 70's Alex Coleman California Maxi Skirt

Vintage maxi skirt by Alex Coleman. I believe it to be from the 1970's. Heavyweight material. Black and white pattern that contrasts with bright pink, blue, and yellow. One side of waist has two buttons and a zipper. Great vintage condition. Some discoloration in places due to age (see 6th photo) but no other stains or tears. No size tag but would likely fit closest to a M-L. Please refer to measurements. Length: 41". Waist laid flat: 13". From a smoke-free home.