Hello
Part of the history of the Cosmo. the company was created in Milano by the Daĺla Corte family. The shape of the rear resembles a Urania and this is no coincidence because I had read in one of the Dalla Corte family histories that they had participated in the invention of the e61 (I don't think so).
This family also created the Spatial brand, for 15 years ago under its own name the Dalla Corte brand.

Not many brands have been able to make a hydraulic system reliable. Some even closed due to technological choices... like Gaggia or Zenith who believed in the thrust of steam...
best wishes