Sorry, but no helpful information can be garnered with these scans. And if the missing "lavender" color was caused by a missed step in the printing process, then all "lavender-back" cards on that sheet would be missing the color.
Are you scanning directly from your scanner (printer), i.e., laying cards on the scanner bed and pressing "SCAN" on your scanner/printer? Or are you acquiring your scans through a photo editing software program?
I personally use ArcSoft PhotoStudio 6 which came with my Canon cameras.
Someday my cards may double in value and then be worth half of what I paid for them.