I would assume it's a Toy Toni homemade special so probably no more than £120, the Palitoy equivalent would be £50-70. I only think this would be more as the German card is more desirable.
If it randomly turns out to be genuine, which is unlikely, then a lot more
"U grade for sale"
Translation: If it was legal my grandmother would be living on dialysis so that I could harvest and sell her kidneys.