Tone quality

[Newton Hunt]

> Presumably, they were not so dissimiliar at "birth". 

That is a wholly unwarranted assumption.  I have seen such
on old AND new pianos.

By the way, tune the one that wants to be tune sharp as the
octave and then the other as a unison as close to "good" as
you can get without upsetting yourself or the customer. 
Other solution is to replace both strings make by the same
person on the same lathe one after the other without a
coffee break between.

		Newton