Home / United States / World War II / Metal Insignia / Sterling Pin Back U.S. Maine Corps Officer Collar Insignia by Hilborn Hamburger Sterling Pin Back U.S. Maine Corps Officer Collar Insignia by Hilborn Hamburger$75.00 Excellent condition, with uncleaned patina. 1-3/8″ X 1-1/2″. Sterling Pin Back U.S. Maine Corps Officer Collar Insignia by Hilborn Hamburger quantity Add to cart Item Number: 61411 Category: Metal Insignia