Vintage 1970s Detectolite Counterfeit Bill Detector Black Metal Purple Light

Description

Vintage 1970s Detectolite Counterfeit Bill Detector Black Metal Purple Light. Condition is "Used". Shipped with USPS First Class.
My father bought this in the early 70s when he received a counterfeit bill in his Pizzeria.
I'm auctioning this for collectors.
Due to its age, I am not recommending this for actual use.
This has a purple (UV?) tube light.
You push the red button down to turn it on, and pull the red button up to turn it off.
It makes a humming sound when on.
Label on back says the following:
Detectolite
Counterfeit Bill Detector
Manufactured by Security Industries  Division of Stan Rayboy, Inc
Measurements
7 1/4" inches wide
5 1/4" inches tall (including red button)
~3 1/8" inches deep
Black heavy metal
5' foot long Non-polarized power cord
Please contact me with questions.
This comes from a smoke free pet free home.