Can't be bothered to got to the cellar to look at the type tag. But it was from the '80s I think. Some Miele domestic machine.
And I didn't pay attention to how hard it would be to remove it -- it was already moot by that time. But it is removable.
Good enough, I was just wondering about the brand. It being a Miele makes sense that it would be built that way. The machines I had were a late 90s Maytag (their first front-loader, the Neptune) and a mid-00s Whirlpool Duet. Both were definitely not designed for the counterweights to be removed for transport. You can take them out but it involves a significant amount of disassembly.
I've had two front-loading washing machines now with counterweights, and neither one of them was remotely easy to remove the weights in.