This is a 1979 414A, not a 414. The difference is the 414 had the 'Tuna Tanks' as the mains on the outboards of the wings. Also, the original 414 did not have a name for it, but the 414A had the name "Chancellor." The 421C, as noted below, was the Golden Eagle, which was the top of the line for Cessna piston twins. The 425 Conquest was a derivative of the 421C.