1970s Lee railroad engineer style hat blue white striped Size 23

1970s Lee railroad engineer style cap in blue and white striped denim. Lee label on the front. It reads "Union Made in U.S.A. Sanforized. The label has a vertical tear between the two e's. The bill of the hat is stiffened with some kind of material like cardboard. It is a bit crunchy so I know that the material has cracked inside. The bill is still ptetty stiff, and, in fact, I like it better because it can bend.There are gromets on each side of the hat for ventilation. It measures 23" in circumference. Good condition with a bit of yellowing on the bill and along the edges.