Mattel's Ultra Dome (1982, LCD, 2 AAA Batteries, Model# 2013KJ)
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This is one of Mattel's small handheld LCD games (similar to the Nintendo Game & Watch games). Possible foreign release only... First I've heard of this one was May, 2001, and I've seen at least 3 sell since, usually reaching about $100. Quite rare, and none of the Mattel collectors apparently had one (or had even heard of it) prior to it's initial 'discovery.'
Do I have this? Yes, boxed.