I don't know, but is I Hollis & sons a lesser known name to anyone here ?
I have 2 of their guns & find them both to be well made.
Most of their output went to South Africa, Canada & Australia so I hear. Sold in the colonies so to speak. This being the case means they must be durable types of guns as they would be used hard & wont be sent back to the makers for service like a lot of guns in England were.
I think they are generally under appreciated.
O.M