The South Wales Challenge Cup is the oldest Trophy in the Welsh Rugby history. It was first played for in 1877. The Cup was played for in different versions of national competitions by senior and junior clubs up until the First World War. After a break in rugby in Wales due to the War and a lack of appetite for a nationally organised competition, the cup was then presented to the long serving President, Horace Lyne in 1932 and was returned to the WRU by the Lyne family in 1947.
It was converted into the WRU National 7s trophy in 1966 and last won by the South Glamorgan Institute of Higher Education in 1982. It was displayed at their Cyncoed Campus until some building work took place and the cup went missing. However, in 2021 it was kindly returned to the WRU after being discovered in the attic of Leighton Davies, former Director of Rugby at the South Glamorgan Institute by his widow Pam and brother Paul after Leighton had died.