is 40.6mm diameter,2.98mm thickness. while the Maple leaf is 38mm 3.29 thickness. 1.1 mm overall difference dimensionally.
But yeah. Both have 1 troy oz. Of silver. The ASE
has .09 more copper than the maple leaf, the maple leaf is more pure at 99.99 whIle the ASE
is 99.90 silver both have the remaining balance of copper, ASE
.10% and CML .01% copper.
But 1 troy oz. Of silver is 1 troy oz. Of silver. Same way a 40% half dollar is 40% pure silver while a 90% half dollar is 90% pure silver.