[pianotech] Looking for age and resale value of Kohler and Campbell Grand

[J. W. Stein]

hi Folks,

I am trying to find out the age and resale value of a Kohler and 
Campbell SKG - 500s    with serial number

1Q11GO229 and as of now I am not having any luck.  Any K and C experts 
out there?  I am assuming this model was built by Sammick as it says 
"Made in Korea" on inside tag.

I just tuned a inspected the piano and it's in G to VG condition.

Thanks
Jon