Home / United States / World War II / Metal Insignia / Pair 1924 Army Chemical Corps Officer Collar Insignia Pair 1924 Army Chemical Corps Officer Collar Insignia$30.00 Pin back insignia in excellent condition, 1-3/4″ long. Pair 1924 Army Chemical Corps Officer Collar Insignia quantity Add to cart Item Number: 45718 Category: Metal Insignia