Pinch nose

[Kelleyrubino32]

I recently bought some pinch nose or pince nez glasses they have a N?P then a Diamond with a possible 4 inside. I did a acid test and it looks to have tested between 10k and 14k can anyone tell me the maker and if these are actually gold and around about when they were made

https://postimg.cc/gallery/tFb9Xzf