WWI US Air Service (USAS) Officer Collar Insignia with Nice Vaulting

This is a World War I United States Air Service winged propeller collar insignia. The insignia has some nice vaulting and a detailed reverse.

Circa World War I.

Approximately 1" in height and 1-11/16" in width.

Copper, and nickel-plated brass.

Horizontal pin with tongue-style catch.

None.

The insignia you receive will either be this exact one or one in very similar condition. This is from a United States Army Air Forces collection which we will be listing more of over the next few months. 2@VEJX07 LADEX7/12 S(1)ACJX3/14 S(1)VADEX01/21

7+ (Very Fine+): The insignia shows some light wear and tarnish with a bit of oxidation on the catch.

As with all my artifacts, this piece is guaranteed to be original, as described.