United States Navy Civil Engineer Corps bullion badge, a high-quality embroidered emblem associated with the Navy’s professional engineering branch. The Civil Engineer Corps was responsible for the planning, construction, and maintenance of major naval infrastructure, including airfields, docks, power plants, utilities, and shore bases worldwide.

Civil Engineer Corps officers provided the engineering leadership and command structure for the Seabees (Naval Construction Forces), making insignia connected to the CEC closely linked to Seabee construction activity, particularly during the mid-20th century.

This example is a large, finely made bullion badge, executed in gold wire embroidery on cloth, and shows clear age and period craftsmanship. Such pieces were typically privately purchased and used for formal, ceremonial, or association wear, rather than everyday field uniforms.