Nice early Ocean Magic, the Nigel Semmens model ,shaped by Nigel and numbered OM 58. The spray and glassing is by Gearbox aka Martin Geary. Its a fun looking twin fin with the ill fated G&S star fins ; I think these fins were home made replacements since most star fins broke. It has Clark foam 'super light' , obviously an important feature at the time as the clark foam decal covers the Ocean Magic logo. The board was made in the Lane, Newquay factory in around 1979 / 80 , and needs a bit of tlc. The dimensions are 5'7 x 20 1/2 x 2 1/2.
Semmens was one of the most successful British surfers of his era, winning the British title in 1979 and the European title in 1981. He made a good living from shaping and contests , and took over Ocean Magic from Pete McAllum to make it one of the UK's top surfboard brands. Nigel and Ocean Magic are still going strong in Newquay.