10 Dollars - Elizabeth II 1/2 oz. Canadian Maple Leaves 2018

The "five nines" purity standard (.99999) that the Royal Canadian Mint pioneered for its Gold Maple Leaf in 1999 drove a parallel refinement push in silver production, eventually yielding the .9999 fine silver now used across the Maple Leaf bullion series — a fineness that actually complicates handling, since the absence of hardening alloys makes the surfaces extraordinarily susceptible to contact marks and milk spots, a chronic production issue the RCM has never fully resolved.