Does anyone know about cards from the 1993 Ultra that were printed with "white" blank backs?

Oh dear! I can remember ripping into my first few packs of 1993 Ultra and getting the Mike Piazza and Tim Wakefield *rookies*. Unfortunately, despite the fond memories, there's a part of me that has to tear into 1993 Ultra. Yes, the design is very nice (possibly better than '92) but in returning to this set I can't help but feel the shot composition is surprisingly weak - unless your talking about just about any rookie card where the quality goes up a few notches for some reason. Seriously, take a look at any rookie card: Piazza, Wakefield, Snow, Endmonds, Salmon, Lopez, Klesko, etc. and you have a beautiful shot of that given player. Once you get beyond that there's more misses than hits. Still, the final nail in the coffin is you can take the 1993 Ultra releases for Hockey, Basketball and Football and they all (IMO) outclass the photography in this set. I'd take all the three aforementioned sets over this baseball issue even though I have the most fondness towards baseball when it comes to sports. I understand how someone might say this is because I'm too familiar with this set because I grew up with more than those other three, but at the same time I can't give it a pass in current times because of that. Again, I think 93' Ultra has the superior design, but 92' Ultra probably squeaks ahead in overall importance.