Levi's Vintage Canvas Shirt Jacket, USA, L

My guess is that this is at least 50 years old. The fabric is a Dacron/Cotton blend, rather loosely woven, but substantial and heavy by modern standards. The collars are wider and the side slits are longer than modern shirt jackets. In excellent condition for its age, with no signs of wear (stained collar/wrists, tears or stains). There are some loose threads, which I attribute more to 1970's non-computerized sewing machines than to wear and tear.