1:45 PM PT -- We've spoken with a rep for Grey Flannel Auctions who tells us they've done their homework authenticating the jersey. They say unique features of the jersey -- rips, stitching pattern, etc. -- have been matched with high-quality photographs from the game.
"We believe photos show this is the same jersey," GFA says.
8:45 AM PT -- Troy Aikman says the jersey is not authentic. The auction house believes it is. We are going to make some calls and try to clear it up.
Start saving up, Cowboys fans ... 'cause Troy Aikman's GAME-WORN Super Bowl XXVII jersey is hitting the auction block ... and it ain't gonna come cheap!!
Aikman's threads -- which he wore during his 4-touchdown MVP performance against the Buffalo Bills -- have remained in original condition (unwashed) since the 1993 game.
If that ain't enough to make you reach for your wallet ... O.J. Simpson did the coin toss, and Michael Jackson performed at halftime.
A rep for Grey Flannel Auctions tells TMZ Sports ... the bidding will start at $5,000, but the final price could end up being more than $100K!!
So yeah, you shoulda started saving like ... 10 years ago.
Bidding starts at the beginning of November.