I know what a Loonie is but how big is it compared to American coinage? Molson slo-pitch is a Canadian softball league. Maybe the Niagara Falls Optimist club sponsored a team and the players got the token you found.
The Ontario provincial slo-pitch championship games are at the Optimist's park. Perhaps a medal for having made it that far. But you could contact the Optimist Club: https://niagara.cioc.ca/record/NIA1833
The Ontario provincial slo-pitch championship games are at the Optimist's park. Perhaps a medal for having made it that far. But you could contact the Optimist Club: https://niagara.cioc.ca/record/NIA1833