Somebody knows these speakers brand and model?

As far as looks go, love it, or hate it, the B&W DM-6 was a highly rated speaker system back in it's day.

We called them penguins in my neck of the woods

Actually, with the bent metal feet, they were called Pregnant Penguins.  They were the first boxed speaker with geometric time alignment, pushing B&W to the forefront of speaker research.  All the magnets and voice coils are in the same plane, meaning that the sound arrives to your ears from each driver at the same time.