Kimball Piano

My wife and I acquired this piano when we bought our house from the local historical society. We are unable to date the piano as the only number we have found on it is 10231 stamped in many different areas of the piano but nothing on the soundboard. It's a Grade 3 piano in very good condition. I would suspect with the given serial number that the piano may be a pre-1900's piece. It is playable though needs a tuning pretty bad and one key sticks but looks repairable. I would like more info on this such as a date of manufacture and a possible value estimate.