Hi I just wanted to let you know that I emailed Valletta Glass and received a reply almost immediately from Lizzy that the vases are theirs. She also said that if I bring them with me next time I visit, she will get them signed for me! I am very pleased as I always thought they should have been signed as I can find no fault with them whatsoever and they are beautiful examples. I am very glad for your advice WhatHo in suggesting I try Valletta Glass. Regards Rita.