According to my 2011 Standard Catalog of Baseball Cards: in the June 2002 issue of Beckett Baseball Monthly a sample Elite Series card was rubber-cemented inside. The cards differ from the the issued version only in the appearance on the back of a (usually) silver-foil "SAMPLE" notation. Some cards were produced with the overprint in gold-foil, in much more limited quantities. Cards #1-100 from this set can be found in this sample version.
I told you all that hoping someone would create a samples checklist. I guess there should actually be 2, one silver and one gold. I received the, silver, Carlos Beltran (#52) in the mail yesterday and would love to record it in my collection.
Thanks!