Pretty amazing find man, for sure. And to think it was just sitting in your collection for all these years.
Your best bet is to sell it here, the price has really gone up the last few years so you could get a very fair price, and won't get dinged with fees like you would on ebay. I know theres more than a few serious buyers for it, so it wouldn't be hard to sell, even at $6000-8000.
Or you could just keep it, and be the proud owner of something that every serious NES collector would kill for.
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