It is tagged for the '93 Cup Final, but I don't believe it to be his main Stanley Cup Final game worn jersey, however it does not mean it was not worn. That other famous 1993 white Roy jersey that was used throughout the entire playoffs and was photomatched in the Cup Final (including to the Cup winning celebration) was sold on Classic Auctions back in 2005 and that one had a sizable personalized signature on the front.
Some more clear pictures, particularly of the rear hem, the wear, and the tagging in the neck could help with gauging authenticity. If the story is true on the paper, then looking at footage from the game it talks about may reveal if it is true through a possible video match.
If it cannot be matched, note that Roy did purportedly have at least one backup sweater in each color which he had throughout the playoffs as per the Habs' equipment manager at the time. He did in fact gift the main white Cup Final worn jersey to the Habs' equipment manager after the Cup Winning game. That was the one which sold for $26000 back in 2005, with the red back-up Cup Final sweater selling for $8000 ish back in 2004 (I say likely back-up due to lack of any visible wear).
If there are some clearer pictures, I could get them out into the game worn community with some of the Habs experts to see what they say. I am a general goalie memorabilia guy and I am pretty well versed on the whole, but for a lot of my questions, I always ask the team specific experts as their advice is top notch.
This is the grind of trying to match vintage sweaters, watching the video and then trying to make out the wear from footage when 720i would have been considered unnaturally high resolution:
https://www.youtube.com/watch?v=n5lQEtp6M2g
