After the gap of 16 years from S. 254-270 (336-348 CE), a king ascended the Kshatrapa throne again in 270. Rudrasena III names his father Mahakshatrapa Swami Rudradaman, but no such ruler issued coins, so it is not clear if he indeed was a mahakshatrapa. It is quite possible that the descendants of Yasodaman II continued the fiction of kingship and retained their titles, even as they were driven from power and thereby lost the ability to issue coins. In that case, the ascent of Rudrasena III would amount to a restoration.
Although Rudrasena enjoyed a long reign, as he issued coins from 270 to 300, it must have been marked by strife. There are no coins known for the years 276-79, so it appears he was driven from the throne for about 5 years in that period. Once he returned, however, the series is continuous until 300.
Wonderful portrait and a very clear date and full legend ... a SUPERB specimen!