http://www.ebay.com/itm/Nintendo-2-...t=Video_Games_Accessories&hash=item257230c6d3 Hmmm, this seems to be a bit of an anomaly. Anyone here ever seen one like this?
Looks like the Japanese A/V cable intended for use with the Super Famicom/ Gamecube/ N64 (for those with mono TV's). SHVC-007
A mono cable was definitely available in boxed form for Japan. If Japanese, it's model SHVC-007. I don't know if Nintendo made an official release elsewhere. I've never heard of AV cables being supplied with the rare AV version NES top loader.