Silver mantle of Fire Plate by Pierre Lefebvre

I received this plate as a gift. It has a Certificate of Authenticity from The mount Everest Mint. It is plate #16 and was issued on Dec 1974. I was wondering what its worth is if anyone knows. It has been kept in a glass case so it is in mint condition. Thank you

We cannot answer your question unless we know what you are talking about. It is essential that you show a picture of the plate and any markings on it. It would also be useful to know how big it is, both size and weight.