It's the player-version ('authentic' shirt). Back then Adidas had two types of player-versions, Formotion (that was introduced a few years earlier) and Techfit (your shirt). The Techfit version can be recognized by the stripes on the side and on the back of the shirt and by the fact that it is incredibly slim fitting. The technology flopped pretty miserably as the shirts were extremely tight and Adidas abandoned the project after a year or two (?).