Calumet and Hecla Mine medal given for 29 years of service from 1866 to 1916. It comes in its original green velvet lined case. Please see photos for condition. I don’t know what kind of metal it is made of. It is approximately 2 1/2 in diameter. Great gift for a mining collector! The item “Calumet Hecla Medal 1866 to 1916 29 Years Service in Case Mining” is in sale since Saturday, December 10, 2016. This item is in the category “Coins & Paper Money\Stocks & Bonds, Scripophily\Mining”. The seller is “postoak1″ and is located in Austin, Texas. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, SE, ID, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, to New Zealand, SG, NO, SA, UA, AE, QA, BH, HR, MY, CO, CR, DO, PA, TT, GT, HN.