This Boston Celtics NBA Champions team photo from the 1961-62 season has an enclosed full Letter of Authenticity from JSA. The signatures on the 8x10" black and white photo are written with ballpoint pen or fiber tipped marker and are signed in blue or black. Signed by HOF forward/guard Frank Ramsey, HOF (as a contributor) forward Satch Sanders, HOF forward Tom Heinsohn, forward Jim Loscutof, HOF guard Bob Cousy, and HOF guard Sam Jones.