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PIANO SERIAL NUMBER DATABASE
Tonk, William & Bros. Piano Serial Number Lookup
Enter a Tonk, William & Bros. serial number to estimate the piano's production year. Available coverage: 1895–1926.
1895–1926year coverage
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Serial-number locations vary by piano type and manufacturer. See the location guide for upright and grand pianos.
Tonk, William & Bros. production series
Choose the factory or serial-number series that matches your piano. Open a row to view selected serial-number examples.
Tonk, William & 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 |
|---|---|
| 7,600 – 8,399 | 1902 |
| 13,700 – 14,599 | 1911 |
| 21,200 – 22,189 | 1919 |