To me looks like when they was hand cutting the designs they may have touched the glass with the tool. I had to get the magnifying glass and used a light to see them. If you have a question please ask. The item "4 Nachtmann Cut To Clear Crystal Wine Hocks Goblets 8 1/4Red Green Purple Blue" is in sale since Sunday, September 19, 2021. This item is in the category "Pottery & Glass\Drinkware & Barware\Drinkware".The seller is "bettybo_11" and is located in Chanute, Kansas. This item can be shipped to United States.