I have had a number of these with the Jaffe Rose import label. So would go with a Czech attribution for this one.
I believe the Whitefriar's examples are all full lead crystal, the controlled bubbles spiral from the centre when viewed from the base, the Czech examples tend to have the bubbles and colour within a central core (if that makes sense) and as John mentions above the Whitefriar's weights have a groove to the top.