Vintage Big Mac Overalls~Square Bak~Striped~Carpenter Coveralls~Railroad~Medium?

Description

Neat pair of vintage overalls or coveralls! Big Mac brand - I’m guessing a medium size. I did my best to add some measurements below. All of the buttons appear to be there and in good shape. The zipper works and the middle button snaps. They have been in storage and I didn’t wash them up. They do show some wear and spots as you can see in the pictures. May clean up even better with a good cleaning.
I’m usually an XL and these were pretty small on me. Would guess a Medium, possibly large.
Inside leg - 26” - 27”
Outside leg - 31”
Across middle (bottom of zipper pouch) - 22”
Top down to zipper - 12”
Top from corner down to first button - 11 1/2”
Across middle just above zipper - 19 1/2”
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