The terms “Porsche turret” and “Henschel turret” are modelling folklore, made up in ignorance decades ago and repeated so often they became factoids. The simple truth (as I read it ages ago) was that Krupp produced all the turrets, and the first fifty were the curvy more complex so-called “Porsche” design, replaced by the more slab-sided later turret for a number of reasons including ease of manufacturing (speed and thus cost savings) plus the elimination of a big shot-trap under the chin. Henschel assembled all the tanks, adding the Krupp-made turrets onto the hulls they built.
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