This brooch tested 800 silver with chemical solution. The cat’s eye cabochons appear to be simulated as they show wear like old glass does, and the surface of 2 of them is slightly gritty. It has a C-clasp. It needs repair to reattach one of the cabochons. I have not polished the silver yet. It appears to have an Asian mark on the reverse. I cannot figure out how to meet the size restrictions to post a photo of the reverse unfortunately. I was wondering about the time period of production and if there is a name for the style. Also, I would like to know about what worth it might have. Thank you