https://www.usmilitariaforum.com/forums/index.php?/topic/410372-surface-warfare-specialist-officer-badge/
Surface Warfare Specialist (Officer) Badge - NAVY, MARINE CORPS, COAST GUARD - U.S. Militaria Forum
Hello, Has anyone an idea of what sort of date this badge would date from-to? It's 10K Gold Filled by Vanguard V-21-N. I know the hallmark predates the badge...