A definite WOW!!! That's a super example!!! And it looks like a huge and chunky bronze....got to be hitting the 30 mm range and 10 grams or much more. Hmmm, My nephew now lives in Canada and married a local girl there...OH, you were just referring to the two same style of coins
Nope ... my sweetie is a wee bit smaller in diameter, but it's a wee bit heavier than your example ... Diameter: 20 mm Weight: 8.49 grams ... but overall ... => yeeeeeeeeehaaaaaaaaa ... we be coin-cousins, dawg!!!
When flans are cast there would be a tendency for a scale to form on the surface that should be cleaned off to give a clean strike. There must have been several ways to do this but some mints used files. The marks would disappear if the strike were heavy enough but usually there is a trace at least. Most of us will pay more for coins without such marks but they are not fault as much as they are facts of numismatic life. I would like to know how other mints accomplished the same thing (chemically???).