I purchased this eyepiece new in 1980. There is some wear on the chrome barrel from focuser setscrews and the eye lens coating has a slight amount of wear from 20 years of manual guiding :^). The reticle is a double crosshair type and the barrel diameter is 1.25".
The reticle is illumated by a red LED light source.
This eyepiece has the remote power supply attached to about a 4 ft. long cord. I have the original power supply which is setup for 3 volts using 2 AA batteries and a variable potentiometer to regulate brightness. I also have a homemade power supply which uses a 3 volt lithium power source and is also controlled by a variable potentiometer. There is also a resistor loop on the eyepiece which I constructed to use a 12 volt power source (car battery). This is easily removed and I will leave it on. I had to use it frequently to keep the eyepiece from dewing up in my climate.
I'm asking $55.00 and I will pay shipping in CONUS.
Thanks for looking,