I rescued one of these from impending doom. Free to anyone who has a need for one...http://www.computinghistory.org.uk/det/ ... Game-Card/
The one I have has a grey plastic case coving the board like this one...http://www.richardlagendijk.nl/cip/mix/item/qs_120/en
Absolutely no guarantee it actually works, it came out of a 44 gallon drum of plugs and sockets cut off cables etc. Probably fairly easy to repair if it's busted.
CHCH people get first dibs because then I don't have to fork out for postage :^)