One other thing I noticed about this Sunnyvale light sixer is the molding for the power jack is different from my other light sixer.
The earlier model has a keyhole shape whereas the later ones are more plain. Searching for Sunnyvale light Sixers on ebay turned up a third, inward-slanted variation as well. It seems that Atari had plenty of different tooling over the years!
- sramirez2008 likes this