WWII "Hickam AFB" Bike

This is a bike that my dad had in the garage that he was told came from Hickam Air Force Base at Pearl Harbor during WWII. I'm not sure that it is an actual military issue bike or if it was a civilian bike that was just used on base. There are no serial numbers stamped below the cranks, just the label on the rear fender. Anyone have any thoughts? Just didn't want to put it in the garden with petunias in the baskets if it is something worth saving! Thanks!