I think the 50C on the holder is meant to show the denomination of the token. There have been a lot of tokens distributed over the years from merchants or individual organizations that could be used for a monetary value at different events. At one time, I had a token that stated it was worth $1. I wish I could remember the exact details of it. But I remember that it commemorated the Peace Bridge (Buffalo NY to Niagara Falls?). The monetary value was only for the fair or the celebrations that were held.