I doubt that numbering is anything more than labeling for identifying the blending recipe. Just as the many of their blends have names or combinations of letters and numbers. I bet some of the labels are pretty arcane, while others, if we knew the code, would be forehead slapping, shoulder shrugging obvious.
While it's true that many of the Lanes are re-branded, in my experience, many of the blends were modified by local dealers. I know the old "Tobacco Cache" had many blends concocted for customers which started with a Lane as the base which was then adulterated for a customer. If found pleasing by that customer's friends it was named and put on the shelf for sale.l