Old earrings question

Hi all! I was wondering if anyone could estimate how old these are and possibly where they’re from. I’m not sure what material they are, though it seems like there is a mark on it.

 

The upside down and backward wires are like what the Victorians did, but these aren't made like Victorian earrings. THe mark.... AD+ ???? My bet would be 1990s costume.

 

ADT? I could only find ADT as a mark on Thai (ear)rings, but those were also marked with Thai or Thailand

And is this a mark?

 

It would have to be a lowercase t - not crossed at the top. The other two letters are capitalized, so I figured the plus sign had better odds of being correct.

 

Back to front hook and maker's mark AD+ or AD* only. If only the mark was A*D!
They were born ca 1900 and I'm pretty sure they speak with a German accent.
They are also filthy.

 

Im considering purchasing them but wanted to get an idea if it might be a modern gimmick or something more interesting. The clasp looks promising so is the filth to be honest hahaha.

 

No clue… those are the only pics I have atm will check if I’ll buy them haha

 

The earrings are definitely not modern Thai, they are antique European.
If the price is right and you can handle those back to front hooks, I'd say go for it.