Hi,
I see that Tanith already has focused you to correct direction -
www.desna-glass.cz - store this site.
This piece is from very recent production of Desna - part of Jablonex group (
www.jablonexgroup.com). It is in correspondence with Marcus approximation, ZBS was in recent times also part of Jablonex and patterns were shared. My guess is that this piece is made accordint to older Vaclav Hanus design for Jablonecke sklo, but I am not 100% sure.
Jindrich