Gumbo Soup Spoons are longer than their cousins the Cream Soup and Bouillon, and shorter than the Place Soup Spoon. The bowl is round like the Cream and Bouillon spoons. Just looking at a cream, bouillon, or gumbo soup spoon it would be hard to identify one from another.
Dauphin by Durgin
Cromwell by Durgin (6 7/8 inches)
Audubon by Tiffany (7 inches)
St. James by Tiffany (7 7/8 inches)