There will be novices and unformed sellers all over the place claiming that these are pure silver since they do not have "HSP" stamped on them. They may make the claim they have the same silver content as the Hard Rock silver strikes that also have no ".999 Fine Silver" stamped on them.

I would say they they should have an "HSP" stamped on them or should not be a silver strike "KNOCK OFF"!

My 2¢ opinion.