An American sterling silver part flatware service for twelve, 20th century

'Sir Christopher', comprising: 11 dinner forks, 12 dinner knives, 11 luncheon forks, 12 luncheon knives, 12 salad/dessert forks, 12 butter spreaders, 12 round bowl soup spoons, 11 cocktail forks, 12 caviar knives, 20 teaspoons, 12 demitasse spoons an