...all eBay sales:

$22,988 on May 11, 2005 for a Dunes $5 chip
$18,667 on May 17, 2005 for an Apache large crown
$12,989 on June 12, 2005 for a Thunderbird bicentennial $5 CIC chip
$8,300 on June 13, 2005 for an Apache large crown