At a guess, I would say faded.
You can see a line partly in the face on the left and the faded part looks like the face on the right.
As though it has been stuck into a picture / photo frame corner a part of the way.
Or in a top corner of a book
Yes, looks like a changeling, ie partly faded.
There's one pretty sure way of checking.
Take it to a dealer.
If he says yes, it's a changeling and he doesn't want it, you have your answer.
If he says yes, it's a changeling, but he'll take it off your hands for, say (a nominal price), then you also have your answer, but a different one.
