I once reconditioned a Viennese action grand piano that had a decal with a date (gold medal/ expo) from the 1920's. Don't remember the name - it didn't appear in my piano atlas. But goes to show that this action design lasted fairly late, at least with a couple conservative makers. The Viennese action has a generally lighter feel, and shallower key dip. Somewhat less reliable repetition. And, depending on how you manipulate the key, you can actually vary the strike point. So, in spite of the piano in question being a later model, it still would have interest for someone who wants to experience that type of thing first hand. Piano students still read books where people as late as Brahms are quoted preferring either the English or the Viennese action. Experiencing the action first hand can have a big effect on how you interpret certain styles of music. At least I have found it so. In other words, it has an educational value for the right person. Don't know how or if that translates into dollars. Regards, Fred Sturm University of New Mexico
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