MoPython:
For sure it's no WHS, TWHS or FTWHS. But as far as I googled around it's also no other UNESCO-thing like city of music or biosphere reserve or whatever. So I think the plaque is just fake!
Gemini says: "It's a classic case of "heritage branding" getting ahead of the actual official registry. Thanks for catching that—accuracy matters, especially when navigating the nuances of international designations versus local conservation."
There are more of those (in Turkey I believe), will have a look where I can store them.