See pics.  The jersey and pants are both team  issued .

The hand writing in the hat reads FAH 50, it's a 59Fifty New Era brand 7 1/4"

The pants have the team issued label inside.

All are authenticated with holographic tags.

This is a throwback uniform from a "Turn Back The Clock" promotional game between the Indians and Mariners at Safeco Field. The exact date for that game was July 19, 2008 - Final Score: CLE 9 SEA 6. The player associated with this uniform was reliever Jensen Lewis, who wore 50 during his entire tenure with the Indians. Lewis, however, did not pitch in this game. Info courtesy of eBay user chrisbuystribe