Still another clone, this console is identical to the original Intellivision except for the brand name. The box has a very detailed description of the Computer Adapter that was never released. Mattel Electronics originally interviewed GTE to manufacture the consoles, which is a strong reason why Sylvania had advanced console knowledge that others did not. Rumor has it that these were given away for free with the purchase of a Sylvania television.
From a collecting standpoint the Sylvania CIB remains one of the hardest to find boxed.
Consoles are all model number MC100.
Source Links:
atariage.com/forums/topic/321449-sylvania-and-tandyvision-owners-help/
www.intvfunhouse.com/gte/cat/