ST HELENA 1922-37 2s purple and blue/blue variety, SG108cSt Helena 1922 37 2s purple and blue blue, variety 'Cleft rock' (R5 1), SG108c. A fine mint example with large part original gum. Minor gum thin spot, but still of fine and fresh appearance. A very rare printing variety with only 346 possible, but with a low survival rate as a result of destruction of unsold stock in 1938. Stanley Gibbons catalogue value: 500. This definitive issue first released in 1922 was designed by the St Helena born Postmaster