Would a 1964 signed Yankee baseball have facsimile signatures?

Answer 1

1964 New York Yankees Stamped Signature Baseball

Souvenir team baseballs with Stamped signatures have been made and sold at ballparks, for at least as far back as 1950. The Baseball you have can be a stamped signature baseball. A Stamped signature will usually have the same density, and thickness throughout, and the signature will start, and end with no variation at all.

See Related Links below for samples of souvenir stamped signature baseballs including one from 1965. Check the signatures on your ball to the signatures on the 1965 ball as they will use the same stamp for multiple years. If they are exactly the same you know for sure that you have a souvenir baseball.