Trajan (98-117). AE Sestertius, 103-111 AD. Obv. IMP CAES NERVAE TRAIANO AVG GER DAC PM TR P COS V PP. Laureate bust right, draped on left shoulder. Rev. SPQR OPTI[MO PRINCIPI] SC. Single-span bridge with tower at each end. Below, a boat. RIC II 569; C. 542. AE. 23.22 g. 34.00 mm. R. Rare and nice example of this fascinating issue. Bright green patina with brown spots. VF.