Ok, I found some pics of an official one. It's at least an R9, there really aren't many of them out there.
http://nesdev.parodius.com/bbs/viewt...e3505d35ba5d35

Another AV one, also has pics that shows the revisions of RF boards. Some RF boards don't produce the wavy lines.
http://www.nintendoage.com/forum/mes...threadid=49364


Here's a regular RF one for comparison. That bit of plastic with the connections isn't part of the shell, it's just attached to the board itself.