Very interesting type of reverse with bridge.
Roman Imperial
Trajan (98-117), Sestertius 103-111, Rome mint
Obverse: laureate and draped bust right
IMP CAES NERVAE TRAIANO AVG GER DAC P M TR P COS V P P
Reverse: arched bridge, consisting of two stories, with arch surmounted by quadriga at either end, spanning river, boat sailing below, SC in exerque
SPQR OPTIMO PRINCIPI
Diameter 36 mm weight 26.87 g