Hello Mauro,
Quite a large collection with some very interesting cameras that you have collected. Congratulations !!

There is also a 9X12 version

Congratulations, you have collected some nice classical cameras and lenses.

There is another version of the PIC with a lens cap, see below for a couple of pictures

Congratulations, you have collected quite some nice Nikon items

Here is a picture

Interesting camera, particularly the three windows on the front are intriguing. I found a similar black camera described as Regula King KG https://en.todocoleccion.net/classic-cameras/rara-regula-king-kg~x23769384#sobre_el_lote. Congratulations with your find.

Here are a few more pictures

Some pictures

Here are some pictures