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Very specifically the 5-screw variant. If you're unfamiliar with the difference between the 3-screw and 5-screw cartridges, it's not too hard to educate oneself. The 5-screw version has two extra screws holding the front and back of the cartridge together, you see.
This may seem like a minor cosmetic difference (because it is),but the 5-screw cartridges were phased out by Nintendo in 1988 with subsequent games (and reissues) using only the 3-screw casing, so the extra secure carts are more sought after. Mike Tyson's Punch-Out!! is already hard to come by after Nintendo replaced the titular boxer with Mr. Dream (pictured above),and the version with two extra screws is the rarest 5-screw cart there is.