Hi John, and glad to see you here.... I really am....
I agree with the ideas of inner linings having an effect on outwardly visual color. IMHO, in many cases, multicolor layer decors are such that it likely would have been made by at least a couple, if not more companies. The oxblood and white spatter decor is a good example of a simple decor to produce with no real strong identifying characteristics. Multicolor spatter, or end of day decors as some call them, are also a good example of a decor which is difficult to isolate versions of.
IMHO, in the case of these types of decors, reasonably unique shapes become critical for the purpose of attribution. Some shapes are almost useless for the purpose of attribution, but some are quite unique and can be used...... In many cases it becomes the combination of things which allow for an attribution.
Dirk, I know you said presumably.... and I happen to agree with which direction things likely point..... but as I said before, I need something solid to make it an attribution over a suspicion. (I want to believe also) Other than the links being claimed on CW, I have never seen anything which would support a trophy vase being made by Ruckl... I am not saying they didn't.... I just like something reasonable to link it.... Not a decor like the oxblood spatter and a series of what I see as unfounded leaps....
The yellow interior of the Lifelight is a different interior color than the other examples. That is explained away as a variation of the Oxblood decor by Ruckl. The interior of the other pieces are a also a couple of different reds if I am not mistaken.... another reason I would likely look at multiple different sources for the decor. I have seen this type of decor with at least 5 different interior colors...... 3 shades of red, yellow, and clear..... That includes the large piece I own in a different shape than any of the others, and also what appears to be a different interior color, kind of a bright Magenta...... I have no idea who produced mine.... I just acquired it recently... Pics attached.....
Interestingly, in a video posted on the internet from the Tango exhibition, the upturned leaf pattern with the leaf feet on the Lifelights on CW is actually shown in the Welz case on a tri-ball footed piece in pink. To me at least, that foot design on a tri ball foot is a much stronger pointer as to source, than a simple cased decor. Here is a link to the video..... There were also a couple of pieces in the exhibition which confirmed some of my earliest Welz attributions of decors.....
http://multimedia.ctk.cz/cs/video/document/6383477/regionalni-muzeum-teplice-predstavuje-tango-skloI look forward to hearing about your friends pics.... and please check if there were any other Welz images from the same source....