Herb,
Thanks for the reminder of this list, Datig is a resource I don't go back to too often. His material has usually been superceded by more current data, and occasionally is simply in error (his numbers for the Vickers guns being perhaps the most egregious and long-lasting example).
Actually, my frustration with this kind of generalized presentation is the reason for my own commercial serial number survey in another discussion.
--Dwight
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