Possible Clues:

• Capital investment issue to be retained initially
• Cowboy hat put back on after end of events
• Man's hat with wide brim and high crown
• Don't make this change to boy's hat
• The American cowboy's topping!
• No test's needed anyway - it's topping!
• Coty fragrance
• Let it stand boy its old hat
• No tests (anag.)
• Hat since 1865