Vintage Levi Strauss Checkered Western Shirt

Measurements: Under arm to under arm: 22” Shoulder seam to shoulder seam: 17.5” Collar to hem: 28” Sleeve length: 9.5” The shirt is red & white, made of a cotton/polyester blend, has pearl snaps, and front/rear pointed yokes. The tag inside seems to have had a blue border around it before (Seen in other photos), but this is the only flaw (not one you can see). People have said it is from the 50's, but I think it might be mid 60's. Any questions shoot me a message.