Is there any inherent difference between strikes that say "Limited Edition Ten Dollar Gaming Token" vs. ones that say "Limited Edition Collector's Series"?

Seems like they are the same size, have the same content, and have been produced by the same mints. I've noticed that the Collector's Series tend to be non-Nevada. Are they also won from silver strike machines? Are they also redeemable for $10? Or were they simply purchased from casino gift shops? See http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3268080356&category=3443 for an example which does not have a redeemable dollar amount stamped on it. I know these are listed in Dennis and Christie's Non-Nevada Silver Strikes guide at something north of $10.