Vintage 70s 80s Nomex III FR Blue Denim Work Jacket Fire Resistant Welder XL

Vintage 70s 80s Nomex III FR Blue Denim Work Jacket Fire Resistant Welder XL. Snap closure, single chest pocket, denim lined waist pockets. Not really sure the decade on this one. The snaps look like ones commonly found on 70s pieces but the tag seems more modern to me. Approx measurements pit to pit: 25” collar seam to hem: 27” Item is pre owned. Excellent condition, minimal/normal signs of fading or wear.