Lapel pin is the most best option for promotion, events, premium and advertisements. It can be made in hard enamel, pro-enamel, soft enamel, photo etched with soft enamel, imprinting etc. Quality with different material, as copper, brass, iron, stainless steel, aluminum, zinc alloy etc. Various finishes are applicable, like gold, silver and nickel plating the most common applied and others as bronze, chrome and antique gold/silver/nickel plating for choices.
Particular information on the posted flag pin for reference:
Material: Brass
Quality: Photo etched with soft enamel in blue, red & white
Plating: Gold
Finding: Post and butterfly clutch