The characters are smudged and unreadable. MRF-18A-036CE?? What is certain is up to MRF-18A-. There may be minor scratches from use. Since they have prescription lenses, please replace them yourself if necessary. This is a used item purchased from the market, so the purchase date and prescription strength are unknown. The glasses themselves are included, but there are no accessories. For those who understand used items, thank you. M-310