Funnily enough my mum's piano is still with us...
Her parents bought it thinking it was new from the makers (Pfeiffer) in 1932. My mum learned to play on it, then did all her practice for LRAM, I did lessons on it, my mum gave lessons on it and recently we decided it needed a good service. So we found a really good piano builder who almost fell over when he saw it!
He spent a quite few hours re-felting, adjusting hammers, sorting out the pedals and putting on a couple of replacement "ivories". It cost us about £400. Turns out it was actually made between 1872-74 and had been sitting in their warehouse for 60 odd years.
And pianoman said it had possibly the best bass he'd ever heard from a piano - as good as a concert Bösendorfer he reckoned.
So if you can find an oak overstrung Pfeiffer, buy it! And find someone very strong to move it. I've been involved in 6 moves with it so far and 'er's a reet bugger!