Panther tank
The Panther II was built as a successor to the Panther tank, featuring improvements from lessons learnt from the Eastern front campaign. While visually similar, it was essentially a different tank, with thicker armor, a new turret, engine and gun. Many of the components from the original Panther were dropped and replaced by components from the Tiger and Tiger II. It would have been faster, though weighed more. One prototype was made but it was halted to focus on the Panther I. Some of the design influence went into the E-50.