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Significant Accounting Policies (Details Narrative)
3 Months Ended
Sep. 30, 2019
USD ($)
oz
shares
Jun. 30, 2019
USD ($)
Accounting Policies [Abstract]    
Fee paid to Sponsor percentage 0.50%  
Fees payable to Sponsor $ 2,000 $ 1,000
Minimum block of shares issued redeemed | shares 50,000  
Transaction fee for creations and redemptions $ 500  
Maximum amount of platinum to be held by trust unallocated account | oz 192