1988 Kenner Starting Lineup Cards Football Forum

Need some assistance from anyone that has the following cards in their collection (or can find them online) and can provide the missing digit on each card number on the lower right back:

35991020_0 Tony Collins (New England Aftermarket) -- is it "2020" or something else?
35991040_0 Chris Burkett (Buffalo)
35991060_0 Tim Krumrie (Cincinnati) -- is it "6050" or something else?
35991070_0 Earnest Jackson (Pittsburgh)
35991070_0 Rod Woodson (Pittsburgh)

35991110_0 Ken Easley (Seattle Aftermarket) -- is it "1030" or something else?
35991120_0 Mark Malone (San Diego) -- is it "2010" or something else?

35991210_0 Anthony Carter (Minnesota)
35991210_0 Steve Jordan (Minnesota)
35991210_0 Darrin Nelson (Minnesota)
35991230_0 Gerald Carter (Tampa Bay) -- is it "3030" or something else?
35991240_0 Ron Brown (L.A. Rams Aftermarket)
35991260_0 Dave Waymer (New Orleans) -- is it "6050" or something else?
35991270_0 Tony Casillas (Atlanta)