Early Hewlett-Packard Serial Numbers …
Thanks to Devon Dawson (archivist at the Agilent History Center), we now have some official HP production serial number documentation. Serial numbers ranges for years up to 1949 will be tabulated here as they are made available.
| Year | 200A | 200B | 200C |
| 1939 to 1941 | prototype – 3428 | ||
| 1942 | 3429-4975 | ||
| 1943 | 4482-6860 | ||
| 1944 | 7425-11156 | ||
| 1945 | 11302-13366 | ||
| 1946 | 13417-14784 | ||
| 1947 | 14865-16443 | ||
| 1948 | 17770-19077 | ||
| 1949 | 19378-20398 |