Vintage Denim Button-Up

Suspected vintage denim button up. Labeled as large but would better fit a medium or petite large. Thrifted years ago and no longer wear. Denim is perfectly worn in and soft while still in great condition. Shirt has some minor wear and tear and some mild discoloration on the right shoulder (pictured last). Snap buttons on the sleeves and main body are a metal and tortoiseshell combo. If you have any idea about the brand or relative age of this shirt please message me as the brand tag was removed before I got it! Measurements available upon request, offers welcome :)