Up until now, I've never seen a 1991 Will Clark GU Giants home jersey for sale. Is this one legit...?

http://www.ebay.com/itm/Will-Clark-1...item4d0f5000a3

Coincidentally, there's another one on Ebay which is similar in every way except this one has an addition of a size tag on the collar and is being described as a Scoreboard jersey...

http://www.ebay.com/itm/Authentic-Wi...vip=true&rt=nc

So now I'm really confused. From my understanding, Scoreboard only produced Clark jerseys in '89 and '90 and both had 4 digit year tags. These '91's have 2 year digit tags which are congruent with Clark GU jerseys. Can anyone shed some light on these jerseys? Thanks!