What is the manufacture date of Winchester 94 branded Ted Williams model 100 serial number 273.332140?

Somewhere between 1963 and 1980. Sears used the JC Higgins brand through 1962, and quit selling firearms in 1980. The 273 number is NOT a serial number, it is a Sears stock (catalogue) number. If there is no other serial number, would have been manufactured before 1968, when Federal law began to require serial numbers on rifles and shotguns.