The 30B card is only slightly different from the 30A card. The most noteable change is that the Palitoy Logo on the front of the card is larger, returning to a similar size to that of the logo on the original 12-back cards. In addition to this, the font used for the 'ages 4 and up' wording on the front of the card is different, and on the rear the text 'Made in Hong Kong' has been added to the bottom right corner.

As well as the first series of ten figures from the Empire Strikes Back, the second series of eleven Empire figures could be found on this card, even though none was pictured on the reverse of the card. Figures from the earlier Star Wars series were also released on the 30B cardback, but these are rarely seen. I have so far only seen figures from the first 12 on this cardback, though I have heard of a Luke X-wing figure on an unspecified 30-back. Potentially there is a total of 41 different figures released on this card.

There is currently no evidence of the second series of ESB figures appearing on the 30A card, which suggests that the 30B card appeared later than the 30A.
30A Cardback
30B Cardback