C.Otto Berlin upright

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C.Otto Berlin upright

Post by iangarrs » 17 Jul 2016, 11:23

Please date 13501 code upper left top of woodwork frame.

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Bill Kibby
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Carl Otto, Berlin

Post by Bill Kibby » 17 Jul 2016, 11:59

Very few dates of Carl Otto's numbers are published, and these do not look anything like your number. The problems of dating pianos purely by numbers are discussed at

If there are exhibition medals illustrated on the piano, these might be dated 1885, 1889 or 1891, and the piano would have been made after the last one shown, as described at

I might be able to tell you more if you could post photos to show what the whole piano looks like, or email them to me to post.

Most Otto pianos are from about 1890-1910, so have a look at the general information at

Otherwise, the best hope is to ask your tuner to remove the action (the working parts of the notes) and look for the action makers' name and number.
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