The DF-2 is China's first medium-range ballistic missile, with 1,250 km range and 15-20 kt nuclear warhead. It received the western designation of CSS-1, (China Surface-to-Surface missile). Some western observers claim that the DF-2 is a copy of the Soviet R-5 (SS-3) SHYSTER, as they have similar range and payload. Others attribute the design to the Chinese.
Pics thanks to Mike (Bootneck)