I believe this plane originally was filled with candy.
One wing reads Army Bomber and the other reads 15-P-7.
Original paper label on nose of the plane is the printed propeller.
The body of the plane is hollow.
4 1/8" nose to tail, 4 1/8" wingspan, 1 1/4" h
Small chip on underside of one wing, marked in image #5 by pencil.
I've come across other glass forms that candy was sold in, this is the first plane I've come across.