This connector is part of a home built current controller I found. It is 20 years old. I know it's a long shot, but I am wondering if anyone can identify it, as I would like to use it. The only markings I can see on it are one the back side, it says "CXA" then it enumerates the pins 1 to 6. The outer diameter of the barrel appears to be about 0.7 inches.