St Helena SG124f 1935 Silver Jubilee 1 1/2d Diagonal Line by Turret on Cover

1936 (2 Apr.) envelope registered to New York with hand painted vignette mounted on left and bearing the set of four with 11/2d showing variety diagonal line by turret cancelled by neat despatch c.d.s. Stamps with light perimetral toning not detracting the fine overall appearance. S.G. 124f (225 as a used stamp).