vintage trucker hat featuring a patch for "Thunder Bay Aviation Ltd" With Slogan

This is a vintage trucker hat featuring a patch for "Thunder Bay Aviation Ltd" with the slogan "Service, Our Speciality". The embroidered emblem on the front was custom-made for Thunder Bay Aviation Ltd., a regional aviation services company based in Ontario, Canada. Deadstock, this is a rare, vintage promotional item, it is no longer in active production.