I have a pair of ear jewellery which is marked with some really small hallmarks. One says 750, one says (?)T and a star, and the last one is extremely difficult to say for sure, but it looks like it's the number 18 in one corner and then AP in the other corner.
I'll attach some images here for you to see. Any ideas?
![Image](https://thumb.ibb.co/c8tg20/AP.jpg)
![Image](https://thumb.ibb.co/bs7r20/Tstar.jpg)