I've got a 500/450 NE hammer underlever by Leonard/A. Hillis that's from 1906. A local friend had another Hollis 3 digits off,same caliber but alas a boxlock/ejector.
What's the chances that they were in the same rack and had the same reamer back in 1906. Them add the chance that they'd be together again halfway around the world a century later?