Yes I have one from the same seller. Took a while to receive it. Have th 59,5Ah version and takes me and my TS 1200 unrestricted around 70 km on a charge.
In the Super Soco Nederland Group on facebook there are several people who have bought and recieved one

There is also this German Youtube video, same battery different seller. Its in German but with auttranslation you will understand most:
https://www.youtube.com/watch?v=aPu_SiJ9YRg

Lots of people in the comments also bought and recieved it.