Very nice!
The back looks to be a close match of these.
"WWII Aerial Gunner Wing, Sterling Silver by Weingarten Gallery."
"In World War II the Aerial Gunner Badge (Wings) was awarded to gunner of a combat crew. The badge was established on April 29, 1943. This is a very well made sterling silver museum quality reproduction of this 2 inch wing with pin back of the AMICO design. The 2 inch size is worn on the shirt uniform."