Vintage Acme Fire Alarm Box Station. Includes back mechanism with plastic cover which allows you to view the actual mechanism. Some scratches on the plastic cover which includes the marking of 2-3, matching the numbers on the front of the box. The tag #1201 on the front label matches the #1201 stamped on the back of the door.
The "Union Made" label is a sweet touch. Untested, I do not know what voltage operates this box. The spring seems to be a bit weak. Some chips in the paint.