Offered here is a rare autographed Jack Nicklaus 1973-74 Panini Campioni Dello Sport #375. How rare is the 1973 Panini Jack Nicklaus card. Only 162 of these unsigned cards exist in the entire PSA Pop Report - compared with nearly 5,000 of the 1981 Donruss Jack Nicklaus "Rookie" cards that were produced 8 years after this earlier and rarer Panini issue. Only 12 autographed examples of this card exist in the PSA database. This is a prime candidate for authentication and encapsulation by PSA. 

Letter of Authenticity from James Spence Authentication (JSA)