Group E marks the complete change to the Class IV type. Somewhere around the beginning of this group there is a 25% devaluation, but the exact die that marks the start of this has yet to be identified.
The die engraver is mainly concerned with the obverses in this group. He continues to experiment with the designs in front of the face, and in two obverses illustrated in my book, he modifies the face to harmonize with the decoration in front. These two obverses are the most elaborate of Coriosolite coins. He makes only minor changes in the design of the chariot driver, foreshadowing the design of the next group.