The Westland Wyvern production models.
The prototype TF.Mk.I powered by a 3,650hp Rolls-Royce Eagle 22 H-24 engine. This was the finale of the Rolls-Royce pistons that never made it into service because of the advent of the jet age. Max speed was 456mph at 23,000ft and it could lug a warload of torpedo or bombs plus RPs in addition to its four 20mm cannon.
The S.Mk.4 was the belated production variant (via the pre-production TF.Mk.2 powered by the Rolls-Royce Clyde turboprop and the T.Mk.3 two-seat trainer variant of the S.Mk.4) which saw action at Suez. Fitted with the 3,670shp plus 1,180lb thrust Armstrong-Siddeley Python turboprop, this was an unloved and tricky aircraft. Some might say its ugly but for me the Wyvern had a sleek beauty often unmatched in late-war fighters.
The one-off T.Mk.3 was a hybrid, having Mk 2 features and the Python with the original longer nose cowling.