John may just have helped me to unravel a mystery. I earlier posted a Decanter by Tom Levkovski in blue bubbled glass as similar to his bubbled glass. I also have this attenuated bottle which is doubly signed - Tom Levkovski's initials and an unknown signature. I think it is quite like your bottle down to the bubbles, form and colour. I now wonder if it is Peter's or perhaps he might know who made it - wild guess Cedar Prest.
Ross