Magnificent Round Buzz Saw Cut Crystal Butter Dish

This is a truly magnificent round butter dish made of heavy lead crystal cut in a wonderful buzz saw design with a star pattern in the center. The bottom has a starburst in the center. The point of the finial has a very tiny rough spot to it, and a small chip to the bottom edge about the size of grain of rice. It measures 5 inches high and 6.5 inches across the plate. I do not know the age or maker, it is an auction item. It is of wonderful quality though.