Canterbury is one of hundreds of tiny labels about which I know nothing except that it issued a single in the 1970s; and I wouldn't even know that if Robert Bowes hadn't been kind enough to draw it to my attention and send me a scan. The single in question was 'I Want To Give' b/w 'Ecstasy' by Kristan & Cadilac (GS-SP-001; 1974). The label has a custom-pressing appearance, but that's all I can say. Googling has failed to reveal the existence of anything else with GS-SP-000 numbers.
Copyright 2009 Robert Lyons.