True HUO, fully working and clean will sell for north of 3k easily.
I vote keep it. I took a peak at your colelction and it would fit in very well. It also would kick out a number of other games IMO based on what you have listed.
Great sounds, great gameplay, and just super fun to shoot.
I'd love to see photos of it!
I still have a list of buyers from when I sold my spare. Glad the new owner is still loving it. It is a keeper for most people once they get it in the house! Definately give it some time after you get it working before making any rash decision to sell for a quick profit. You obviously dont need the money and I am guessing you will love it if you give it a shot.