*** Comes with Altman Sports Authentication *** I got this signed at an east coast show over 5 years ago which Altman put on: *** Please make sure to view "SEVERAL DETAILED PICTURES LISTED ABOVE" of this extremely rare signed Bailey Howell custom made Boston Celtics jersey. Signed in black sharpie on a Celtics jersey that is lettered as pro with all sewn on tackle twill lettering.(size XL)