Vintage 60’s Koratron brand Men’s Rain Trench Coat, size L ?

Vintage late 60’s, rare find, men’s rain trench coat, gray with black faux fur zip in/out liner. Beautiful quality of worksmanship and fabric. A classic coat that never goes out of style. I’m guessing the size is large, no tag, definitely not a medium. I can send any measurement you need. From a smoke free home.