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The extant serial number list for Kimball would indicate it was built about 1904.
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.
Generally, you will find about a 6 digit number stamped somewhere inside of the piano on the plate. This is the gold part of the piano called the harp. On some Kimball brands, they placed a name plate on the inside SIDE of the piano with the serial number located on that. A piano technician can look up the age but, we need the serial number to do so.
2002
http://www.bluebookofpianos.com/serial1.htm#KIMBALL KIMBALL (Dates & Production Serial Numbers): 1900-71000 1917-298200 1925-360000 1933-392000 1905-140000 1918-307000 1926-364000 1934-399000 1910-211000 1919-313000 1927-368000 1935-406000 1913-258000 1921-328000 1929-378000 1937-420000 1914-267800 1922-336000 1930-383000 1947-488000 1915-279800 1923-344000 1931-386000 1948-500000 1916-288000 1924-352000 1932-389000 1949-510000 Vertical and Grand pianos after 1950:1950-517000 1957-579000 1964-646800 1971-771000 1951-528000 1958-586500 1965-661300 1972-817000 1952-537020 1959-595500 1966-678500 1973-820000 1953-554200 1960-604000 1967-700100 1974-901000 1954-553000 1961-607400 1968-717900 1975-951000 1955-562300 1962-617900 1969-721500 1976-100010 1956-571300 1963-630500 1970-764200 _____________________________________________
The extant serial number list for Kimball would indicate it was built about 1904.
1977
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.
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.
what year was a Hitachi excavator built with serial number 133 2797
It was built in 1959!
it would appear there are too many numbers in your serial number.....................
about 1918
about 1905
about 1918
about 1929
1917