This is a vintage aluminum compartment fly box, from Richard Wheatley tackle manufacturers, filled with various artificial fishing flies.
Key Features
• Aluminum Construction: Lightweight metal pocket case with a hinged lid.
• Compartments: Multiple small sections featuring spring-loaded or clear plastic/celluloid flip lids to keep individual wet or dry flies secure.
• Lid Insert: A felt or wool pad fitted inside the top lid for storing extra or drying flies.
• Contents: Assorted feathered and tied fishing flies for trout or salmon fishing.
The box which is full of fishing flies which I can’t identify is as pictured and is sold as seen