6 Crystal Long Drink Glasses with Spikes

Set of 6 slightly flared crystal glasses, clear long drink glasses height 14cm, diameter top 7.5cm, bottom 6cm, bottom thickness 1.5cm, not stamped underneath (no space) could be Bayel crystal. Alternating high and low hollow notches on the side, diamond points underneath, snowflake pattern underneath (this is my interpretation). Simple model to match all styles, very little used if at all, no chips or washing scratches, a few small storage scratches on two. Weight 2.5kg.