Source – http://ftr.wot-news.com/2015/02/28/straight-outta-supertest-cromwell-berlin/
It’s a regular Cromwell with new shape (some stuff on chassis) and same collision model (premium/reward tank):
E’ un Cromwell regolare con nuova forma (roba appiccicata allo scafo) e stesso modello di collisione (carro premium o ricompensa) :