The two chips that were lost are:

$1 Silver Slipper, N3778, Christy Jones, Purple with 3 red inserts, inlay has 2 slippers
$1 Thunderbird, N3912, the famous T-Bird chip, Purple, Christy Jones, 4 red inserts, inlay with picture of the Thunderbird logo T-Bird

Both chips are in lightly used condition. The chips are pictured in this group.