PIANO SERIAL NUMBER DATABASE
Grinnell Bros. Piano Serial Number Lookup
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Enter a Grinnell Bros. serial number to estimate the piano's production year. Available coverage: 1902–1960.
1902–1960year coverage
Not sure where the serial number is?
Serial-number locations vary by piano type and manufacturer. See the location guide for upright and grand pianos.
Grinnell Bros. production series
Choose the factory or serial-number series that matches your piano. Open a row to view selected serial-number examples.
Grinnell Bros.
Selected examples only. These rows are a small sample of the stored reference data. Enter the complete serial number above to check it against the full PianoLookup database.
| Serial range | Estimated year |
|---|---|
| 7,700 – 8,999 | 1912 |
| 23,400 – 23,999 | 1923 |
| 33,400 – 34,199 | 1935 |
| 46,000 – 46,999 | 1950 |