Your medallion is not that old. It looks like the key chain medallion used in the 1970's, but it's not. My first thought was a "Tool Check", used back in the day. But they didn't have TRADE on the back. I think it may be 1950's or 1960's. It's not as old as you think. The logo you have was done by Gustav Young in the 1880's.

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Don Mundell