Here you go.

This is a WW Greener E10 ( Empire, cost 10 Guineas new )
1 Guinea = 1 Pound
The Ficile action is not easilly mistaken for the Empire.
The first attempt by Greener to make an affordable pattern action with interchangable parts.
Intended for export to the Empire Hence the name.

Enjoy

Nitro

PS: The book is a great source of interesting information.

This serial is # 601** which dates it to 1917