The thickness of the crystal varies from one glass to another, and as a result, the glasses do not all have the same weight.
Other minor differences are present: the circle at the base may be either wider or narrower, the rim diameter of the bowl differs by a few millimetres, as do the base diameter and the overall height of the glasses.
Flaws: 3 glasses have a small chip at the base (see last photos), the other 7 are in excellent condition.