SEGAFREAKS Cards 22 through 31 were related to games in the Panzer Dragoon series.
In 1996 and ‘97 SEGA released a set of trading cards featuring characters, creatures and hardware from their history.
Apparently there were three sets of cards. Set 1 was probably released on September 27th of 1996, and contained 60 cards, numbered 1 through 60. This is the set with Panzer Dragoon, but also has NiGHTS into Dreams, Virtua Fighter, Fighting Vipers, Virtua Cop and some hardware featured.
The entire set’s reverse sides were printed on page 194 and 195 of Japan’s Sega Saturn Magazine, Volume 16, released 27 September, 1996. This magazine is viewable in PDF format here.[1]
Set two was seemingly released on November 22nd, 1996 and contained another 60 cards, numbers 61-120. It was also featured in Sega Saturn Magazine, on pages 194 and 195 of Volume 19, released 8 November, 1996. This issue is viewable here.[2]
Set three was probably released in Q2 of 1997 and contained another 60 cards yet curiously, seems to finish on card number 190. Series 3 begins on card number 131, which means that somewhere between sets two and three, a mini set of 10 cards was released. From Windy: I can’t find any information about it yet, but I could easily be wrong about it, too.
Set three is featured on pages 120 and 121 of Sega Saturn Magazine Volume 22, released 4 July, 1997, viewable here.[3]