Hi y'all,
I'd be grateful for any help in identifying this fascinating vase. I'm actually writing this post for a second time, as the first one got lost, and it's by way of describing the vase the first time that I came to the conclusion that it is indeed quite fascinating.
It is almost 21cm tall and weighs almost 1,5 kg; its walls are quite thick (1cm) and very smooth. The bottom is actually the only part of this vase that is not completely smooth: it's got a ring of what looks like burst bubbles, and in the middle of the ring there is another small, smooth area which seems etched - even though you can't really feel the etching (I don't know if this explanation makes sense). In the middle of the small smooth area is an etching of the letter "K"; and in the upper part of the "K", there is another etching, like a mirrored "c" or the upper part of the letter "p".
The orange strippes seem to be in the transparent glass (not painted on it, or some such), same as the bubbles which you can see, and the smoked quartz part starts very, very gradually - so now I'm wondering how the maker got to do that

Anyways, any help as to the provenance would be greatly appreciated

I also apologise in advance that I'll be posting some more identification requests: I plan on parting with some part of my glass hoard at some point in the near future
