HK Silvers are nothing special however as someone explained
They're stamped/pressed and silver like as if you were to buy a music CD..or Regular Ps2 DVD Format Games I suppose..
But once again the Q&A towards whether DVD9 can be copied or not is NO!!
Consumers can only purchase DVD5 Blanks and Burners only support DVD5 Format Discs..DVD9 are NOT BURNED they're pressed..Someday sometime DVD9 burning technology will appear..For all we know it's already around the corner just hasn't surfaced yet..