Derby

What is a Derby? A Derby refers to a grey top hat or grey bowler hat that was typically worn with a specific overcoat (Covercoat) following the example of Lord Derby around the turn of the century.
The Derby was one of King Edward VII's favourite hats.
After a long hiatus, the hat resurfaced in 1950 in Paris, where it became popular at the racecourses, especially in Chantilly on the day of the Prix du Jockey-Club, the French Derby.