Army Air Corps In Service Chain Pin in Box

Vintage WWII sweetheart Army Air Corps chain pin. One small pin is the wing propeller insignia and the other is the blue star flag (typically referred to as the 'son in service' flag but could be used for any loved one in service) with two stars indicting two sons (or loved ones) serving. Sterling silver sticker on the velvet box. There is some discoloration / tarnishing on the pins. The box has some wear.