If it was remotely close to my size I would buy it right away. Its a 3XL, but extremely hard to find, EXTREMELY!
http://www.ebay.com/itm/NWT-Majestic-Authentic-Umpire-Mens-Polo-Shirt-Blk-Long-Sleeve-Cool-Base-/321270608660?pt=US_Men_s_Athletic_Apparel&hash=item4acd387314
And one from Phil Cuzzi
http://www.ebay.com/itm/Authentinc-Numbered-Mlb-Umpire-Majestic-Long-Sleeve-Shirt-/161168928962?pt=US_Baseball_Fan_Shop&hash=item25866ab0c2