What is the year on a Thompson Center Hawken serial number 19889?

The Thompson Center Hawken rifles were produced from the late 1960s through the 1980s, with serial numbers indicating their production date. Serial number 19889 suggests it was likely manufactured in the early 1970s, as earlier models typically have lower serial numbers. However, for the exact year, consulting Thompson Center's manufacturing records or specific serial number charts would be necessary.