This is a 1973 New York Yankees team ball. It has 23 signatures on it. The most notable signature is that of Thurman Munson on a side panel. The ball was examined by PSA/DNA and it found 5 signatures to be clubhouse versions.Some of the good signatures are Thurman Munson, Horace Clarke, Graig Nettles, Gene Michael, Mel Stottlemyre, George Medich, Pat Dobson, Lindy McDaniel and 10 more good signatures. The clubhouse versions are Bobby Murcer, Sparky Lyle, Ralph Houk, Sam McDowell and Ron Blomberg. The ball is a Wilson, New York Yankees ball that the gave away on ball day. Some of the signatures are slightly faded. The PSA/DNA letter of authenticity certification: E43326.