Big Mac Bib Overalls Denim Overalls square bak 44” X 27” no tag Union Made 60s?

VTG Big Mac Bib Overalls Denim Overalls 'Square Bak' 44” X 27” no size tag Union Made 60s? Pre owned in good condition with some wear to finish from age. For more details please study all pictures. Measurements as follow: 22" across pit to pit area 27" inseam Almost 58" total length of bib overall from top of strap to end of hem. Almost 15" thigh across to hem 10.5" leg opening Almost 26" across hips Rise to mid area is 13"