Unknown Brand Vintage A-line Denim Skirt

Vintage 70s/80s denim A-line midi skirt, no size tag or maker label. Bought this item years ago & loved it, but doesn't fit anymore. Flat front & back, no pockets, sturdy metal zipper and button closure on front. Has small belt loops & kick pleat in back for walking ease. The denim fabric is soft & does have some stretch to it, no label showing fabric contents. In excellent used condition, no stains or holes that I can find. There is a little snag on the waist band(shown), a skinny belt would cover that. Please see photos for approximate measurements, from non-smoking home.