The initial release featured six Shogun Warriors: Combatra, Dragun, Gaiking, Grandizer, Great Mazinga and Poseidon. The second release added Dangard, Leopaldon, Voltes V and 17 (Daitetsujin 17 in Japan), and re-released the initial six with different boxes and box back graphics.
These back box graphics are the main difference between initial release and second release Collector's Shogun Warriors as there was no change in the figures. I've seen three box variations: a thin box that is just slightly larger than the figure with a header for hanging; the same box mounted on a wide card for hanging, and the wide boxes shown in my pics below.
Many of these figures were later released as Mini-Godaikins (there is virtually no difference in the actual figures (GoDaikins have "Taiwan" in stead of "Japan" embossed on them an also are covered with metallic decals) and due to this confusion, prices on loose figures vary tremendously).
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