Hi Robbo,
It has taken over a year, but.......the bowl of yours, is, as I thought, not Sklo Union.
This is a pattern known, or at least marketed in the UK as, "Aztec", a candy dish, and a boxed example clearly states "Made in GDR" (the former East Germany). Manufacturer is still unknown at this time, though VLG Lausitz is a serious possibility.
Regards,
Marcus