Your images showed me what I wanted to see, and no need to apologize at all for them these kinds of marks can be quite difficult to capture an image of.
The style of font in the stamp would have me lean further towards Welz as the manufacturer of this piece. Although the stamps are really, in almost all cases, only provenance marks and not positive indicators of house that produced it, I would not associate this style of font with an acid stamp on a Kralik piece.
Although there are a handful of stamps, such as the arched Czechoslovakia mark (Kralik), and the Czecho-Slovakia in an oval (Loetz) which are consider to be identifiers, most acid stamps either support an attribution, or at least point away from a company without indicating a definitive attribution.
All of that said, and again, not proof positive, my attribution for the piece would be Welz production.