This OAL baseball is signed by Robert Ballard on the side panel in blue ballpoint pen. Ballard is noted for his work in underwater archaeology (maritime archaeology and archaeology of shipwrecks) and marine geology. He is best known by the general public for the discoveries of the wrecks of the RMS Titanic in 1985, the battleship Bismarck in 1989, and the aircraft carrier USS Yorktown in 1998. Signature is authenticated by PSA/DNA with a basic COA.