Hello. I would like to request some additional opinions about this blue iridescent art glass perfume atomizer. It is etched LCT at the underside, with a Tiffany Favrile paper label. However, it appears identical to the Steuben shape 6407 perfume bottle, which just happened to be made in blue Aurene! Is this a Steuben piece that has been made up to look like a Tiffany? Or did they really make pieces this similar... Any opinions would be appreciated. Thank you.