I just found another piece of information on Horst's site.
There seems to be a Donar Rose by Joy Cumine / GB / 1989: This one looks just like yours Julia.
http://sempervivum-liste.de/Se...
We already have an entry for this one, but no photos.
Hen and Chick (Sempervivum 'Donar Rose')
Then the Donnarrose by Kayser & Seibert / D / 1965 / This one give the description as: large, light brown green rosettes, ciliate margins beautiful, blossom pink.
I see we have an incorrect entry in our database for this one. I just moved it to Donar Rose, now there is one entry for Donar Rose.