All kinds of parallel card levels, sets, years. Also serial numbered cards. Cards will be NMT+ or better, stated if otherwise. No Jets, Canadiens, Gretzky, Lemieux or Roy. CS means condition sensitive and cards are subject to factory issues or are easily mishandled. If you notice a defect that is standing out in photo then that is probably series weakness. Black or non-white border series of cards are subject to corner issues. Quality offers excepted. II means inaugural issue of that particular set.