Yes, for many tools, especially Model A-B-18 ones that were used or produced for many years, you need two lists. In Model A times through a date in the thirties I cannot remember, they made up numbers with prefix giving Model application... a tool could have a number prefix like ABV, which would indicate use on A, B , and some early V8, AND the same or equivalent tool was probably also made before 1932 with just the A, so an early KRW tool might show up as A-xxx or ABV xxx... and some took a different form in 1932 to fit both A and B's needing a slight change!
After the mystery date, the number part referred directly to the Ford basic part number of the part it was used on, like numbers in the 6000 range for engine tools, and a prefix defined the models it would fit. The part number clarified things, but the prefix became arbitrary letters not directly identifying model like ABV did.
Many tools you will find that applied to multiple years will have the early number forged onto the part and the newer part number stamped in, indicating a tool the simply stayed in production for a long time.
Things that span '28-48, like the front wheel bearing tools, thus can be found with two different early markings and a late marking as well.