Vintage E-3 A Sentry (AWACS) Belt Buckle by The Buckle Connection. The buckle is made of solid Brass, it weighs 4.6 ounces and measures 3 5/16 x 2 inches. Overall, this buckle is in great condition, the minor signs of wear do not distract from the overall beauty of the buckle, it's been well cared for and it will make a wonderful addition to your belt buckle collection.