I believe there were nine different ones made, three for 1998, 1999, & 2000. I have seven of the nine:

1998 Geronimo
1999 Sitting Bull, Chief Joseph, Tecumseh
2000 Red Cloud, Black Hawk, Pontiac

I do not remember what the two from 1998 that I am missing are, so if you get any offers please let me know, Thanks.

And I also have the 2001, "King of the Hill 2001" a picture of a female Indian with child gold plated in 24 karat gold.
(not looking to sell, info only, but would like to complete my set of 1998)

So if anyone has the last two that I need from 1998, PLEASE email me, Thanks, Jay.