Spread with SGE over Comex implies it's a "You know, A Demand Thing." from Chyna, not US driven, as there are new bank delivery rules, to get around the 13% VAT on personal bullion purchases.
Chynese don't trust banks, because govt ownerships. Look at fails on SWPs and "Condo ownership", where local officials actually hold the title. They buy gold and silver, and bury it for later needs, lest there be confiscation, again.. Because, "Tradition".
Remove illegals "Demand" pressure from ALL mkts, and affordability rears its pretty little head.