Whilst browsing google's image search for Sega Saturn related imagery - again - I found this particular awesome Segata Sanshiro Shinken Yugi print ad, which was scanned from a japanese Sega Saturn magazine. Segata's face this detailed (click the pic for a much larger version!) is a rare occasion and should be perceived by everyone who calls himself a Sega Saturn fanatic. Too bad Segata's face is kind of bleak / transparent and thus not perfect for future photoshopping / reference.The source of the pic turned out to be some kind of spanish message board with an extensive gallery of Sega Saturn related imagery sorted by the categories wallpapers, print ads and hardware. It's a really nice collection, so...
Give it a try!
On a sidenote: I also found this great and highres picture of a Virtua Fighter 32x print ad, which may be the only time you are able to see an artist's impression of a dad and his son playing Virtua Fighter on the 32x plugged into a Mega Drive. Including a screenshot of Virtua Fighter painted with what looks to me like oil paint. Very great.

