A very nice vintage to possibly antique art glass vase. I have looked at many hundreds, if not thousands of iridescent glass vases in my research. Just about everything that resembles this piece is Loetz production. One or two pieces by Kralik look close too. I’ve yet to discover a signature/mark on this piece. I will leave it to the buyer to discover it’s origin. Certainly it’s early 20th century studio art glass. Likely of Bohemian origin. Great art nouveau design. My photos don’t capture its true glimmering beauty. Great size for display, a robust spring bouquet would look nice in it. It also looks perfect on its own sans flowers. I’ve noticed no condition issues. Estate fresh from an large old glass collection. Ships ASAP! Thanks