| Currency | Leu (ROL) |
| Facial value | 3,00 |
| Years of issue | 1963 – 1966 |
| Metal | Steel-Nickel |
| Ø in mm | 27 |
| Art.-No. | RO03.00A |
| Price EUR | 70,00 |
Oil refinery. It symbolizes the industry of the country under the socialist regime. Oil production in Romania is very old. In Ploiești, industrial oil production and a small refinery (the first in the world) were operational from 1857. Production was centered in the Plains of Pannonia. It peaked at 313,000 barrels/day in 1976 before decreasing to 79,000 barrels/day in 2016.
