Thank you for the advice! I believe the ebay link is from my purchase. Someone from Reddit helped with the Keller reference and I've submitted it to Numista as a new entry N#574817 (pending).
This is the link to the banknote on the Colnect.com website. If you open the link, you will see that, at this time, there are 4 variants. Yours, as link has REIHE G to bottom left. The other 3 are the same except the G.
Still, a great banknote, which I do not have or have never seen