Concinnitas Collection Double Old Fashioned Glasses feature mathematical expressions authored by world-renowned mathematicians and physicists in their own handwriting. An absolutely essential component of any complete barware set, Artel Double Old Fashioned is perfect for whiskey or any other on-the-rocks beverage.

100% Lead-Free Crystal, Mouth-Blown and Sandblasted.

Limited Edition of 100 sets numbered & certificate of authenticity.