I wonder if you could help to provide a date of manufacture for a friend's piano. I've done some very cursory research relating to the manufacturer Ant. Petrof., but not been able to get a sense of when, more precisely, this particular piano was made. I myself would guess early twentieth century - my friend suggests an earlier date, in the nineteenth century. Would it be possible for anyone here to suggest a date to within a decade or two? Have a look at the photos below, and see what you think. Thank you very much in advance.
