Nice glasses, classic shape, thick bottom, but 2 of 6 glasses were errors: Drops (thickening) at the glass edge, and 1 glass was also down on the inner edge violently wrong with a continuous horizontal refraction stripe in the middle of the glass. (The remaining 4 glasses were very good) Conclusion: In principle, good glasses, but equal to 2x rejects seem to be more than just coincidence. Or maybe just unlucky ...?