Coining Manufacturing LLC, Clifton, New Jersey. 53 likes · 7 were here. Over 50 years of excellence in manufacturing and engineering of metal components. Metal stampings & metal machining, including Swiss screw machining, wire EDM & Star CNC machining. Coining Manufacturing, LLC is located in Clifton, NJ. Check Coining MFG LLC information, contact, their available products and services and get a quote from them.