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Financial Highlights - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Per Share Performance (for a Share outstanding throughout the entire period)
Net asset value per Share at beginning of period	$ 64.63	$ 58.11	$ 52.18
Income from investment operations:
Net investment loss	(0.37)	(0.38)	(0.37)
Total realized and unrealized gains or losses on investment in Bullion	(1.23)	6.90	6.30
Change in net assets from operations	(1.60)	6.52	5.93
Net asset value per Share at end of period	$ 63.03	$ 64.63	$ 58.11
Weighted average number of Shares	5,700,685	5,131,918	3,443,989
Expense ratio	0.60%	0.60%	0.60%
Net investment loss ratio	(0.60%)	(0.60%)	(0.60%)
Total return, net asset value	(2.48%)	11.22%	11.36%

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