Comparing: Panther mit 8,8 cm L/71 vs. T26E4 SuperPershing

Development of a modification of the Panther started in the spring of 1944. The new variant was to incorporate a newly designed Schmalturm turret. The new vehicle was designated the Panther Ausf. F. On January 23, 1945, it was reported that the 88-mm gun of the Tiger was mounted on the upgraded version of the new turret. A large number of hulls for the vehicle were manufactured, but the turret never saw production and existed only as a wooden model.

To increase firepower, a new long-barrelled 90-mm gun was mounted on the T26E1 in January 1945. The prototype was designated the T26E4. Development was discontinued in January 1947 due to problems with the gun and the loading mechanism. A total of 25 vehicles had been built by that time, but never entered service.