We think this was Leonard's internal numbering of guns. I don't think there were sets of numbers relegated to Jeffery or Hollis.
By the way, I was fortunate recently to find and purchase a 1908 A. Hollis catalog from India. It is full of info on Hollis firearms, double rifles and shotguns. Some of the shotguns show the typical Leonard scalloped boxlock action. Gives a full page description of how chopperlump Krupp barrels are made. Damascus barrels still first option on high end shotguns. It also shows test targets of 450-400's within 50 serial numbers of my double. What a find! Bob
