I'm confused. Are IMG 2887 and IMG 2879 different vases? I see a bit of one in the background, and the texture looks a tad different maybe.
Can you feel the pattern on the inside? It's a very interesting surface. This may be totally off-base, but to me it looks like the pattern was made with tools on soft glass after the surface was colored. The Webb and Kralik pieces were made by cooling the outer surface with water then inflating the bubble slightly. I don't see how that would work with yours. Unless the two are the same, I don't think the pattern is molded, either.