Original Wells Gardner K7203 series arcade game monitor chassis for a 19" CGA tube. Original Wells Gardner part number is WGE1972-H0GS39L. This one looks to be complete with some typical dust from sitting. We found in a box of spare chassis we had from our restoration days. We have no idea if it works at this point, considering needing repair to be safe.
Please note: working with monitors involves high voltages and can be dangerous. If you are not familiar with monitors we do not recommend installing an item like this.
