Which veneer / clinker is this? Who is familiar with it?

Could Röben Dykbrand be Flemish colorful.

It looks more similar to me to the brown-white colorful.

so that we can take another look at a gable roof as a reference

So your problem is not the reference price, but the lack of imagination to picture another roof above it. But you will have the same problem with the right roof but the wrong window color.

It is then called ZT 5094 and is offered to the mason by the hardware store as such.

It is important to me to use approved products, instead of some "Made in Chinistan". The manufacturer / importer is listed on the test certificate.

We already have imagination, but we have also experienced that the same stone with the same joint looks different on a city villa than on a multi-family gable roof house. Hence my interest

I hardly believe that our local hardware store, which works a lot with the intermediary, sells non-approved Chinese tiles ...

I dare to claim that the clinker on a house with a gable roof looks a bit too busy. Or blotchy. The brick is not only colorful but also has this almost black component with very high contrast to the other bricks. With such material, the masons must know exactly what they are doing and perhaps already be familiar with the stone. Simply taking it from the pallet and starting to build is not an option.

We have the Olfry 1707 Antik for the [Krüppelwalmdach] with a floor plan of 15 x 9.5 meters. On the gable, it should not be even "busier" for me.

Here stands one with such a stone plus a gable roof. Looks good.

Here stands one with such a stone plus a gable roof.

And white windows - I seem to recall that the OP's taste is somewhat "special" in this regard.

that would also look good with dark...