While watching the Yankees/Rays series, I thought about a couple of batting practice jerseys I picked up from Hertige Auctions a few years ago. They were from the exhibition series they played in Japan in 2004. One was Willie Randolph from the Yankees and the other was Lou Piniella from the Rays. It seemed like they had all the coaches and a number of non-star players, so they must have come from the same source. However, there were no documents, etc. from the teams or MLB. Any idea of the story behind them? Are they authentic?