Collection of three single-signed baseballs, each signed by a New York Yankees "Perfect Game" participant: Don Larsen, David Cone, and Yogi Berra (caught Larsen's perfect game). Each signature has been scripted in blue ink and appears on the sweet spot of an Official American League (Budig) ball. Larsen has added the date of his perfect game, "10 8 56," below his name. Signatures average 8/10. The balls all display varying degrees of light age toning and are in Excellent to Mint condition overall. There is a Steiner Sports hologram label affixed to the Cone ball, but no corresponding COA accompanies it.