The story of the restoration of a 1950s classic bicycle for a Land's End – John O'Groats charity ride in aid of Alzheimer's Society
… are a pair of GB Superhood brake levers, which were widely used in the 1950s.
GB (named after its founder Gerry Burgess) was a British company making some of the first modern cycle components available in Britain, exploiting the technical advances in the use of aluminium alloys during World War II.