Williams Saurian Front

One day I was looking around KLOV (i forgot what game I was looking at) and found this link to a eBay auction of very rare arcade game.
Not sure if this game was ever sold because when i came back, the auction was gone before the time is up IIRC.

Text and pictures below taken from said eBay auction.

This auction is for an Extremely Rare 1990 Williams Saurian Front - It is a Factory Prototype for The third installation of the Williams Defender Trilogy (Defender, Stargate, Saurian Front (Strikeforce)) - The machine was NEVER released by Williams, it was released the following year by Midway as Strikeforce(after Midway merged with Williams) - This machine is so rare it is not even listed on KLOV - I believe that THIS MAY BE THE ONLY KNOWN DEDICATED VERSION OF THIS MACHINE - The story of this machine is as follows : This machine was made by Williams as a Factory Prototype for the third installment of the Defender Trilogy, It ended up at an operator in Milwaukee that was given/sold a lot of prototypes back in the day, as they were not only a vendor, but they were the area Williams Distributor - The Machine was played with at the distributor, but sat around a lot and never to be put out on location - The machine has all of the ORIGINAL Williams boards still in it - The sound board chips even say Saurian Front on them - I was told this prototype had some ROM problems and Williams/Midway sent them some new chips to fix it - The game comes up as Strikeforce - The machine is working 100% - It has a revision date of 2/27/91 (which, I believe is still before Strikeforce hit the market from Midway (Williams) - I was told that it is exactly as the distributor received it from Williams with only the ROMs being replaced - The game was then stored until the Vendor/distributor got sold a bunch of years ago - The new owner moved it to their warehouse where it sat for years until I purchased it - The machine is in Beautiful Shape for its age !! - It is an ORIGINAL painted cabinet with Beautiful colorful graphics - THIS MAY BE THE ONLY ONE OF THESE YOU WILL EVER SEE (unless another prototype surfaces) - Williams generally made only a few prototypes - Who knows what happened to the others ?? - The machine is as shown in the photos - I have tried to take detailed photos to show you what you are getting, but please feel free to ask any questions that you may have - Be the envy of all your friends with this awesome game - A must for any Coin Operated, Video Game, Defender memorabilia or Rec-room memorabilia collector!