Small wooden box, 5 5/8" x 1 1/4" and 1 1/8" high. It has a sliding top. It reads Union Twist Drill Co., Athol, Mass, USA. I assume it once held a drill bit. The box is light wood with dovetail construction and dates from the 1920's - 1930's.
This is a nice display item for a tool collection! It has been gently wiped, but not altered or refinished in any way.