Vintage 1970s mustard coveralls jumpsuit

I HATE to give this up but it doesn’t quite fit me and I know someone else will love these. My best guess is 1970s vintage. Excellent condition, only flaw I can find is one of the squares is broken off the buckle. The fabric has no pilling and these may have never been worn. Size is a guess, there’s no size tag. Waist 21” flat Pit to pit 25” flat