OK I believe I'm ready to let this one go. I have Revenge From Mars serial number 1. This is a prototype machine that had some minor playfield artwork and lighting differences vs. the production version.
A little history on this game: I worked at Williams Bally/Midway from around 1994 until Midway got out of the coin-op business for good in 2001. This game was out on field test for a few months (I forget how long but it wasn't more than 6) and then when they pulled the game and brought it back it went to me and has been in my home ever since. It is in excellent condition and works 100 percent (I will take some photos of this later this week when I have some time). I also have an extra NOS original monitor for it, a spare blank motherboard for the PC and two NOS sheets of pin2k glass.
I'd entertain trade or trade/cash offers for people who can do an in-person deal. I'm located in the Chicago suburbs. Games I'm interested in are pretty limited. Spiderman, LOTR, or Stern Batman Dark Knight are the top of my want list but I'm open to offers of other games/cash depending on game and condition. I'd entertain a game plus some money deal for the RFM or depending on the offer, game condition, etc. I'd probably be enticed to just sell it outright too if the offer was right. In the end I'd need to walk out of whatever the deal with at least some cash as I'm trying to raise funds for something very important. Obviously I value this machine higher than your typical production RFM. Local pickup only. I'm in no position to be able to deal with shipping, packing, etc.
I will post photos once I can take some, hopefully by the weekend and can make a proper FS/FT post. I figured I'd put the feelers out for anyone who may be interested in this unique machine.