Vintage 70s Big Mac denim overalls USA made medium Wash SZ S

Vintage 70s Big Mac denim overalls. Union Made in the USA. Medium wash. Size tag is missing, measures as a men’s S/M. Laying flat: 16 inches across the waist, 21 inches across the hips, 29 inch inseam, 55 inches in total length. 10 inch ankle opening. No rips or tears, has some light discoloration and distress as shown in photos. Smoke and pet free home. 🇺🇸 574