Each glass is stamped with Tiffany & Co on the bottom (see photos). Unfortunately one of the glasses has a small chip on the rim. I have included a picture trying to show the chip. The item "Tiffany & Co.
Rock cut crystal highball glass" is in sale since Saturday, January 5, 2019. This item is in the category "Pottery & Glass\Glass\Art Glass\North American\Tiffany". The seller is "donald8366" and is located in Montrose, Michigan. This item can be shipped to United States.