Complex sentence: It has been graded Proof-64 by both PCGS and NGC, and was featured on an episode of "Hawaii Five-O" ("The $100,000 Nickel", aired on December 11,1973).
Split into simpler sentences: It has been graded Proof-64 by both PCGS and NGC. The Olsen specimen was featured on an episode of "Hawaii Five-O" ("The $100,000 Nickel", aired on December 11,1973).