SN30352 just came to my attention at the beginning on 2019. 
      
It sold for US $11,996.00 May 23, 2019 , 10:23PM 
        
        Description read as follows: Estate find of 3 of the Rarest 1970s Video
        Games ever made.
        NOW on Auction (Others include 2-Player Space Race & 2-Player Gran
        Trak 20)
        
        PRE-ATARI made by Atari's founder Nolan Bushnell (Syzygy Engineering)
        with Nutting Associates. Computer Space 1-Player models are RARE, the
        2-Player models almost impossible to find in Original Working Condition.
        
        Excellent Cosmetics and both Player 1 & 2 working properly on Coin.
        Excellent Original with NO cracks or repairs to the rare Green
        Fiberglass console.  Some minor scuffs / scratches barely
        noticeable - see detailed pics for more on condition. Joysticks are
        original and in good working order.
        
        Appears to be one of just a few in the world that have survived. It also
        has its original printed Circuit Boards - see interior pic.  This
        is a very rare machine, likely 1 of only a 100 or so 2-Player machines.
        
        Mega RARE in Museum Quality, this Computer Space was the 1st machine
        made Pre-Atari (pre-Pong) and one of the 1st ever Video Games made for
        commercial arcade placement on coin
        Local Pickup ONLY in Los Angeles
      
Click thumbnails below to see a larger version.