Your Kimball piano was manufactured in 1975. The Kimball Piano Company was established in 1857 by William Wallace Kimball in Chicago Ill. by 1975, the Kimball Piano Company was owned by the Jasper corp. who had two factories in West Baden, IN and French Lick, IN.
A WW Kimball Co. piano with serial number 273144 would have been made sometime in 1914. This year, the company began producing at serial 267800, with 279800 marking the beginning of the 1915 production year.
In 1890, Kimball was still using 4-digit serial numbers (starting with 3200). By 1895, however, the company had jumped to 35000. Considering this, a model with serial number 28527 would have been built at some point during this fiver year time frame, most likey in 1893-94.
A 5-digit serial number on a WW Kimball piano indicates a failry early model. As far as we know, Kimball pianos produced in 1900 started at serial 71000, so this would have been built BEFORE then, but sometime after the company's inception in 1893.
Your question does not have a date so I am unsure as to how long ago you asked it. But I also am trying to determine the value of a Kimball piano with serial number D29936. Do you have any sugtgestions? Di