Unfortunately universal solution - no. For this study, need special analytical equipment and its price is high. Specialist, chemist, in theory, could take some samples from your pictures and check them out, but the results of research will not suffice. You must clearly indicate the chemist what to look for. There are compounds that are not statistically determined using reagents. Nearly one hundred percent, according to the results, you can not tell the exact time and the country of painting. We can not forget such an important thing as - references. You will need to something to compare the results that you get a chemical process.
Alas, but for a small town - a task extremely difficult ...
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