Likely late 1940s to early 1960s, with the 1950s being the most likely period.
Reasons for dating this promotion hat: red, white, and blue patriotic design became especially common after World War II.
The script Coca-Cola logo matches the style used throughout the 1940s and 1950s.
The wording "Patent Applied For – Made in U.S.A." appears on many early folding paper hats before later production simplified the printing.
The contour shape and tab construction are typical of promotional paper hats made during the 1950s.
This Coca-Cola die-cut paper cap was folded together and worn as a lightweight promotional hat. The instructions at the top ("Insert tabs...", "Snap this flap...") are printed directly on the blank portion that became the crown.
These hats were commonly distributed by:
Coca-Cola bottling plants
Grocery stores
Soda fountains
Refreshment stands
County fairs
Ballparks and community events.
Little fading. Only light handling wear. NO tears or missing tabs. Overall, it appears to be in Very Good condition for a vintage paper advertising item.