Charles Hellis, London, .410 28"

[Researcher]

There were no 3-inch .410-bore shells around in 1902. Many English .410-bore shotguns like this started life as something like a .360 Rook rifles and as British gun laws tightened up got rebarreled as less restricted .410-bore shotguns.

[edgarspencer]

Trust me Dave, I know the difference between a genuine .410 and a bored out rook rifle, and can read proof marks. The saddest example I've seen was a drop lock Westley Richards , originally .300 Sherwood, that got bored to a .410.
I didn't say the chamber length was original, and I haven't measured it myself, just going on what the owner told me; that they are 3".
It's just in transit, so I don't know that the owner and seller have come up with a price.