I believe I found the attribution you are referring to and I would not trust it either. I do not really even know if it is Czech, but I would say definitely not Loetz. The definition of the pattern in the decor is much more pronounced than the known Czech attributions I am familiar with for Martele. My experience is that Martele, meaning hammered, is generally a little softer looking, appearing more similar to what a beaten piece of copper or pewter may look like. I find suggestions in the thread that it may be English, and I do not do enough with English glass, as we never really see much in Seattle. I do, just from mild research though, associate that form of foot much more with an English origin than with a Czech origin. Although the Czechs made some vases with "thorn" bodies, I find thorned feet to be unusual for them. My experience is, with the exception of some very specific figural pieces, that applied Czech feet are usually flatter and more of a low profile, or simpler and appearing like flattened "strips".
I have forwarded a copy of the image to Alfredo for his opinion. I will post a reply when I hear from him.
Hope this helps