Marcos is a British sports-car manufacturer founded in North Wales in 1959 by racing driver Jem Marsh and aeronautical engineer Frank Costin. The company became known for lightweight construction, beginning with laminated-plywood chassis and fibreglass bodies. Its historical range includes the Marcos GT, Mini Marcos, Mantula, Mantara, LM-series competition cars, Mantis and TSO GT. The last of these entered production in 2007 before the marque…