1951 Big Nickel commemorative medal

I got a 5 cent medal 38.5 mm diam 24.5 g which represents the Big Nickel monument in Sudbary Ontario, Canada, is a replica of a 5 cent nickel Canadian coin but much larger as you can see from above specs, and has the words the Big Nickel.

Anyone has seen this before? any idea if has any value?

Thanks

There it is,
http://www.zwiggystradetokens.com/1967-sudbury-big-nickel-medallion-aluminum-p-1271.html
i think its a medalion That represent the famous Big nickel in sudbury in canada

j-p