Steve,
With respect, whomever told you that those numbers in your attachment are chassis numbers has badly misled you.
What they are, in fact, are the numbers of the engine/transmission assemblies manufactured during the time period listed. No record exists of when those engine/transmission assemblies were installed in chassis. With only one engine manufacturing source in the U.S. and assembly plants from coast to coast, likely the very earliest a newly-manufactured engine/transmission assembly would be installed in a chassis would be at least two weeks later and more likely three or more weeks (recalling that the assembly plants already had a engine/transmission inventory on hand several months after '36 model Job #1 in the case of December, 1935 and that the engine/transmission assemblies were shipped by rail).