The 747 family is one of the most popular family of aircraft and was the first wide-body commercial airliner produced.  The 747-200 variantincorporates more powerful engines, higher takeoff weights (MTOW) and range than the 747-100.  There were several 747-200 versions produced.  

Introduced in 1971, and further improved over successive years, the 747-200 has higher thrust and weight-lifting capability than the 747-100, allowing it to fly further. A sub-variant is unofficially called the 747-200M and is a "combi" aircraft that can carry both at the same time. Like the 100, many 200s have been given a new lease on life as freight aircraft.

There's a total of 393 747-200 versions built, when production ended in 1991.  Currently, there are still many 747-200s still in operation, although most large carriers have retired the 747-200s from their fleets and were sold to smaller operators.  Following the September 11th attacks, large carriers have speeded up fleet retirement and some 747-200s were either scrapped or turned into freighters.