Italian Ice - S2-E15
Factual error: When Magnum first approaches the Ferrari of the mobster, the front license plate is ZZG A 532. When he drives off, the back license plate can be seen, and it's 574572. Neither is a valid Italian license plate for the time period, it should also be noted. (00:02:35 - 00:07:10)
Factual error: When Blackthorne is on Rodrigues' ship, Rodrigues offers him grog. But grog was only invented in 1740, by British Vice Admiral Edward Vernon, whose nickname was "Old Grog" because of his preference for coats made of grogram cloth.