American Brilliant Cut Glass Punch Cups

These punch cups have some unique cutting on them. Probably the neatest cutting on the cups is called "Tusk" If you look at the third picture, you will see the Tusk pattern in the bottom/side of the cup. This is part of a set of six I have in this pattern. They date from around 1905 give or take. I have no idea who cut these beautiful punch cups.