Tracklink No. 124, Winter 2025. Magazine of the Friends of the Tank Museum (Bovington). The cover star is the King Tiger prototype. It's the second prototype and the Museum has had it in its collection since the 1950's. It's apparently also the only surviving example of the 'Porsche' turret.

I've a simplified version of the whole Porsche/Henschel/Krupp turret palava in the attached link.

Nr.320, The King Tiger or Tiger 2 with Porsche turret.

Both turrets used on the Tiger II were designed and built by the Krupp company.  So why are they so often called the ‘Porsche’ and ‘Henschel’ turrets?

The answers can be found in the tank’s early design. This post is a greatly simplified account of the story.

The earliest work on a heavy tank armed with the 88mm KwK 43 gun was carried out by the Porsche company. The resulting design was known to the company as the Typ 180 and to the German Army as VK.45.02(P).