Bidspirit auction | C & H - Calumet

C & H - Calumet & Hecla Mining Company - 10.1 oz Copper Ingot - Either a souvenir or an advertising paperweight, a 10.1 ounce - roughly 288 gram - copper ingot embossed C & H, the Calumet & Hecla Mining Company. In 1871, several copper mining companies operating in the Calumet Michigan area merged, forming the Calumet and Hecla Mining Company. In 1923, additional mines merged with C & H, the company then becoming Calumet and Hecla Consolidated Copper Company. Universal Oil Products bought Calumet and Hecla in April 1968 and closed the business in 1969. About 1 1/8 H x 3 1/8 W x 1 D inches Condition: Excellent Dimensions: 1.125 x 3.125 x 1 in Weight: 0.63 lb