Cayman Islands-1917-George the 5th-2 Varieties of Overprint on the 2 Pence Halfpenny-Illustrated

Shown below are two varieties of the George the 5th 2 Pence Halfpenny postage stamp issued for the Cayman Islands. Originally in 1912, however in 1917 the stamps were overprinted "War Tax" and their values changed from 2 Pence Halfpenny to 1 Penny Halfpenny. There are six varieties known of the overprint with some sub varieties of the overprint.