Thank you for viewing. This is a Masunaga optical frame made of titanium. It was purchased in 2021 for about 50,000 yen at a store in Fukui Prefecture, the mecca of eyeglasses. The model number appears to be 40□21-150. Please refer to the 10th image. I used it at home for a while, and then stored it, but since I haven't used it much, I think it's in relatively good condition. Please check the condition of the exterior in the images provided. Prescription lenses are installed, so please use them according to your own eyesight. Comes with a dedicated case. MADE IN JAPAN Since this item is also listed on other sites, there may be cases where we have to cancel the order if there is a discrepancy. Thank you for your understanding.