Shown below is the 1 Penny stamp issued for St Helena in 1938. The stamp is part of a set with values from a Halfpenny to 10 Shillings (see 1 Shilling, 2 Shilling and Sixpence, 5 and 10 Shilling stamps this blog). The 1 Penny value in the set was issued twice with another issue in 1940. The 1940 variety had a change of colour to yellow-orange. Of the two varieties the green variety is valued considerably higher than the yellow-orange.