Thaks for that post Don't.
"I think this may cause a lot of panic and shuffling of physical gold in London and, who knows, abroad." I think you are exactly right. If this stuff has been swapped, leased, double booked etc, $1,000 would not even be seen in the rear view mirror.
Any hint of this gold not being available for shipment, or any of the co-conspiritors that breaks ranks and wants to locally hold the gold that they believe they own, could start a real panic to hold and control what is suposed to be yours.
Silver would be right there on gold's coat tails.