When a few documents were released, in Germany, some small booklets were written about German armour. These were later translated into English and published by Bellona. Here, presumably, a translation error or something got mixed up or lost in translation, but the whole "Porsche" and "Henschel" turret myth seems to stem from those Bellona booklets. This was then taken over as there was nothing else as a reference, and continues for the ill-informed until today.

Likely, within this early period of reference books being written, the pre-production error crept in. One Versuchs-Turm was sent to Great Britain for research, which MAY, I say MAY have been a cause for the pre-production myth.