It is a long time that I have noticed this symbol at the top of many window frames throughout the country; it is a circle crossed by three horizontal segments, the central one being a bit longer.
This window frame is from Omsk. But absolutely the same pattern occurs in Yaroslavl, Ryazan, Voronezh and Tambov Oblasts and is most common at art nouveau window frames.
But what does it mean? Where it came from? An enigma…
May be you have seen it in any other place?
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