Great idea....
101, 102 & 103 were all dual game carts that were only released in New Zealand under the Fountain brand. They switched between games via a small switch on the top front of the cart.
101 - Horse Racing / Musical Games
102 - Air Sea Attack / Grand Prix
103 - Shoot Out / Electronic Pinball
There's a picture on the site below, nearly as rare as the Hobby Module.
This used to be a great site, Pong Picture Page, closed down a few years back, its now only available as a web capture:
https://archive.is/ohP1P