Czech Diamond Bubble Vase (Controlled Air Bubbles)

By chance does anybody in this group have any Czech. Diamond Bubble Vases ( name attributed by Craig Orkney) “Controlled Air Bubbles” by others that have acid etched marks on the bottom of their base? Only two of mine do. One an
open circle and the other an oval. Curious of any marks out there and decors that I don’t have and anybody having several of these pieces. I
assume that having two distinct acid etched marks could mean two different manufacturers but maybe the same artist Any help
is appreciated.