Pretty sure that isn't a match shirt. I have no recollection of seeing that on the pitch. Maybe a training top, if it's not some sort of snide copy. Re the tags, they're no guarantee of originality. I got this off eBay a year or so back (don't ask, the seller isn't on there any more)...
Now; it's obviously a snide copy, albeit a fairly good one. The white stripe on the collar should apparently be the same width in the 'v' on the neck. Which it clearly isn't. Also, that shirt comes from 1998; I'm pretty sure there's no warehouse full of original versions of the shirt. As you can see, it has tags. I'm not naive enough to think that's an authentic 1998 shirt.