Further to my search of the manufacturer of an Irmback piano, as close as I can get it, the cyrillic spelling on the inside of this piano is yEPHIrIB, who is likely the maker. Above this is written ANnAOM APYrOrO CrYNEHR. The second letter of the second word is a backward N and the last letter of the last word is a backward R. Who made it? John Lillico, Oakville ON Canada
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