Disklavier

Sorry, my previous was an empty message.

Try:
http://www.yamaha.com/yamahavgn/CDA/ContentDetail/Text_WithCatMenu_XC
/0,6380,CNTID%253D12173%2526CTID%253D410015,00.html


It is a long link, so if it appears in 2 lines, join them before 
copying it to the address bar of your explorer, There should be no 
spaces in it.

It shows were to look for the serial number and explains where and 
when the DKV was manufactured.