Vintage Atlas HO Railroad Crossing Signal Flasher New in Box UNTESTED

Description

I bought this last month at an estate, so I don't know much about it.  I have no way of testing it.  Looks like it was never removed from the box.  The small envelope has screws.
Box is in excellent shape.  Corners are all intact.
Feel free to ask any questions and I'll do my best to answer.
I have more items I am listing and will gladly combine shipping.  You'll have to pay first and once I have packed and weighed your box I will refund the extra shipping.