I assumed these were much later, being stylistically like some of Rony's work.
So Sklo Union, pattern number 20444/310, for Hermanova hut', lis bez kroutku, (ring-less pressing) 1987, and designed by Miloslav Kubinec. Also made after privatisation, when SHH supplied Sahm Gastro shops.
Documented in Glass Review, 1990, issue 9, page 18.