Czech Art Deco black & red spatter glass squat vase

This is a cute little Czech glass vase I picked up in an op shop in Sydney yesterday (one of my old haunts, still reliable as ever for a find, it seems). It was like recognising an old friend, because the decor is identical to another vase I got in 2018. Of course I had to get it!
The vase is made from black glass (shows up deep red when held up to the light) with a bottom up spatter in shades of red.
It measures 6 cm tall, 5 cm across the cut & polished top rim, & 6 cm across the base.
Fourth photo shows it with it's slightly bigger relative found in 2018, which measures 11 cm tall, 6.5 cm across the top rim, & 5 cm across the base.
Czech origin, circa 1920s - 1930s era.