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PIANO SERIAL NUMBER DATABASE
Hajak, F. Joseph Piano Serial Number Lookup
Enter a Hajak, F. Joseph serial number to estimate the piano's production year. Available coverage: 1900–1915.
1900–1915year coverage
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Serial-number locations vary by piano type and manufacturer. See the location guide for upright and grand pianos.
Hajak, F. Joseph production series
Choose the factory or serial-number series that matches your piano. Open a row to view selected serial-number examples.
Hajak, F. Joseph
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 |
|---|---|
| 2,600 – 3,999 | 1910–1911 |