Vintage Phillips Pocket Battery Monitor PW4010 Geiger Counter

Here is an interesting piece of history. A Phillips Battery Monitor PW4010 Geiger Counter, with all original documentation included. This unit is being sold as is, and I am not too sure if it is functional. It is being sold as more of a collector's piece. This is from an old rockhound who passed away in the late 1960's, and somehow made it into my hands a few years back when I was collecting vintage radiation detection equipment.