I've never understood the Historical Letters to be anything other than a way to confirm original configuration and where, when and to whom a firearm shipped, with no guarantee that all that information is available. They usually have some information about the history of that particular firearms development.

Anything other than that mundane information is a bonus.

I'd agree that if the info re: etching vs stamping is incorrect, it should be fixed. Or, maybe there's another, more interesting explanation.

ETA: The OP posted while I was typing and I see there's some discrepancy about total numbers produced. That could be interesting. Maybe there were multiple runs?

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