I don't have the years from 2011 to 2015. Because of the high silver prices they switched from sterling silver to Cu/Ni for the BU coins. The silver content of the proof coins was reduced to 62.5% silver.
Only the fist BU coin from 2011 was also 62.5% silver.
I don't have the years from 2011 to 2015. Because of the high silver prices they switched from sterling silver to Cu/Ni for the BU coins. The silver content of the proof coins was reduced to 62.5% silver.
Only the fist BU coin from 2011 was also 62.5% silver.