The Diamond King looks very similar to this one:
http://www.beckett.com/baseball/2003/don...ux-4691236
However, there is no serial number with it, and it's a darker gray background than the one linked. I could not find a variation in Beckett that seemed to match it, however.
The other card indicated "2002 Topps" on the copyright line on the back, but there are no card numbers or any other descriptors. Again, I could not find a description on Beckett that seemed to fit.
Thanks for any help you can provide!