What year is the allis chalmers with the serial number b76931?

The Allis-Chalmers model with the serial number B76931 is likely from the year 1950. The "B" series tractors were produced between 1938 and 1957, and the serial numbers can help pinpoint the year of manufacture. Specifically, serial numbers in the range of B76000 to B79999 indicate production in 1950.