In a recent twin famicom I found this. First time I've seen it.
name: f5112CE
another name is DUNTK5112DE
has the two anti-piracy chips (I think) d4001bc and d4013bc.
some power boards have these chips on them, but this could be some middle version with an external little board.
(http://www.ladda-upp.se/tumnagel/hcdomotvqofugh/) (http://www.ladda-upp.se/bilder/hcdomotvqofugh/)
If anyone is interested in it, let me know.