Do you think this is Authentic?

[TudorSnowflake]

If you use Google Chrome (might work in other browsers) you right click on the image and do "Search Google for this image" and then type in what it is and if someone has stolen the photo from someplace else you'll find it.

I've also used this to find multiple ads from a seller and every once in a while one of their ads will have a lower price so I offer them that.

There is also Tin Eye:

https://www.tineye.com/

Sometimes that works.

Anyway, just another tool in the box to try.