Extemely rare and desirable if original, but I doubt that this is original as it looks too pristine for a 100 year old print. I could be wrong of course, and you need to do the uv test on the paper to see if it is a modern copy or not. Good luck!
Incidentally, the town Zella St Blasii ceased to exist as such in 1919, when it merged with the neighbouring town Zella to become Zella-Mehlis, so this helps date the label.