<html> Danny, A GS-50 would be older than 1989.  I am not sure of the exact years of production, but I think they were made in the early to middle '80s. You might write to Kawai Europe with the serial number and ask them what year it was sold.  Write to service@kawai.de Don Mannino Kawai America At 11:00 PM 4/10/01 +0200, you wrote: <blockquote type=cite class=cite cite>My client would like to know the salesvalue of his piano: Kawai grand GS 50 make:1989 Case in good condition and the action wil get new hammers Please let me know your opinion. Thanks a lot. Danny Boddin Ternat Belgium </blockquote></html>