The Ancor Marine Grade Mini Lamp #1142, part number 521142, is a durable lighting solution for marine and RV interior applications. This 12 V miniature double-contact bayonet bulb, designed specifically for BA15d sockets, is made with a heavy-duty glass envelope to resist breakage and a nickel-plated brass base to prevent corrosion and ensure solid contact. With specifications including 18.4 W wattage, a light output of approximately 21 candlepower, and a rated life of around 1,000 hours, this bulb delivers reliable illumination. The lamp measures 2 inches in overall length with a glass diameter of 1.04 inches. As a new old stock (NOS) item, it serves as an excellent replacement for burned-out or hard-to-find marine-grade bulbs, especially in settings that demand corrosion-resistant, rough-service design. This RoHS-compliant bulb provides an essential solution for maintaining effective lighting in marine and RV environments.