It just came yesterday. I really love these unusual textured vases and it only cost me a tenner. As yet I am unable to identify glass by sight except for a few W/F pieces and the odd one that comes up that I happen to have in my collection. As was mentioned in another thread by another member, I like to stick a tiny label on the underside and then if anything ever happens to me my kids know what they are selling. In the meantime, whilst I am recovering from my small operation, I can read tons of stuff on here.
Edit: I have just found the vase you mentioned on W/F.com. They do look identical, mine looks taller but that could be down to camera angle. I did buy mine here in Holland, not sure where the lady who asked about it saw it. I cannot however find any markings, TW or otherwise, on the base.
It is not a bark pattern either as suggested on W/F more of a crushed ice design.