Sadly mine is not signed but in reading the thread, it seems that not all pieces were signed. I did email Jiri Suhajek but I did not receive a response yet. I also tried Rony Plesel and received the following response:
Dear David,
surprisingly this vase is not designed by Rony Plesl.
Thanks.
Kindly regards,
Josef� Pleslovἢr class="">
rony plesl studio
aldova 1, A
186 00 Praha 8
+420 773 910 602
josefina@ronyplesl.com
www.ronyplesl.com