I have to say, I am a little bit dissapointed...
It came with some kind of linear switches - no Cherry Logo on them.
The spacebar comes with some very heavy switch with a beige/white slider that says "Key World".
Maybe they are some kind of these taiwanese knock-offs;
https://deskthority.net/wiki/Taiwan_white_and_black_shaft
I have to say, that I prefer the keyfeel of these to Cherry MX Black switches, they feel very smooth and not scratchy at all, I think they are slighty lubricanted.
Anyway I like clicky siwtches better.

The overall build quality is excellent, double shot keycaps - but there is absolutely no manufacturer - neither on the case or the PCB.
But if I am right about the switches, Tai-Hoa or Chicony could possibly be the OEM...
The big IC on the PCB says (c) INTEL 1980...

Sadly it doesn`t work when connected to the PS/2 port of my computer... The LEDs light up on boot but then it dies...