Plane has USAF and RF-84F on it
The "R" is rare as the few out there tend to only say F-84F
Backside has a non-sharp threaded post with a fastener, se we think this is a hat emblem and not a lapel pin.
Backside marking is DIEGES & CLUST
Circa 1950
About 1" wide
Used, as-is. In good condition. See attached pictures.