A recent posting on Google relates to a series of photographs that were found showing the Time-Out arcade at Springfield Mall in Virginia. Amoung this collection of photos, which look like they span a variety of different years, three Computer Space machines can be seen amid the large assortment of games.
Unfortunately none of the serial numbers for these three machines is known, however I simply had to include these pictures to show Computer Space alive and breathing alongside its decendants. Click on the thumbnail to get a larger image.
The discussion posting is here. Many many more pictures of the arcade can be seen there.