One Piece WWI US Air Service (USAS) Officer Collar Insignia

This is a World War I United States Air Service winged propeller collar insignia. The insignia is in one piece and has a flat reverse.

Circa World War I.

Approximately 15/16" in height and 1-3/4" in width.

Copper-plated brass.

Horizontal pin with tongue-style catch.

None.

This is from a United States Army Air Forces collection which we will be listing more of over the next few months. VBJX07 LACEX7/12

8- (Very Fine-Excellent): The insignia shows only light wear.

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