XRF provides elemental data .the table of elements .period, this is important valuable for German and US helmets
Kelly is a good friend , and a fellow collector
So then it is your contention that you and Kelly Hicks authenticated the Champagne Rune "decals" with your handheld XRF, proclaiming that the presence of "copper" explained the "Champagne color". Do you contend that DougB did not show that the Champagne Runes are airbrushed fakes? DougB showed that the helmets you, XRFacts, and Hicks blessed were airbrushed. If XRF can't even distinguish a postwar airbrushed fake decal from a period celluloid based actual decal, then what good is it?
Handheld XRF is good for testing the composition of welds in pipelines, sorting junk metal in scrapyards, identifying lead in paint on flat surfaces, and in archeology identifying what metal an artifact is composed of and what elements are in dirt. It has completely failed in all applications that you advertised it as doing. What's interesting is I was ready to concede it's use on SS decals until that was refuted by exposure of the Great Champagne Rune Fraud. I've yet to see your good friend Hicks counter, much less address, DougB's work.