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Hancock Consolidated Mining Co brown certificate Michigan 0153
White Pine Copper Mine Brass Miners Tag Ontongon Co Michigan
2.25” Pretty Green Prehnite Crystal Group w Copper - Iroquois Mine, Michigan
Hancock Consolidated Mining Co Light Black Version 0142
2.1” Solid Native Copper Nugget w Natural Holes - Iroquois Mine, Michigan
2.75” Neat Native Copper Specimen w Greeb Epidote Matrix - Keweenaw, Michigan
Hancock Consolidated Mining Co Certificate dark black type
Classic Butterscotch Yellow Datolite Specimen - Mesnard Mine, Michigan
2 Inch Spectacular Blue & Red Lake Superior Agate Specimen
The Cove Land & Mining Co Stock Certificate Keweenaw Michigan 0123
2cm Native Silver & Copper Nugget from the Quincy Mine Stamp Mill, Michigan
1lb 4oz Hefty Native Copper and Black Basalt Nugget prospected from Keweenaw MI
5.75” Big Sharp Crystallized Native Copper Specimen w Blue-Green Matrix, Mich
2.5” Shiny Copper Nugget w Natural Matrix - Keweenaw, Michigan
Bay State Mining Co Keweenaw Michigan five dollar script orange 1862 mi 0022
Winona Copper Co Houghton Michigan 0021
Quincy Copper Mining Company Draft Hancock Michigan 1859 very early 0020
Columbia Hall Association Calumet Michigan 0019
Arnold mining co Keweenaw Michigan 0017
Orange Ahmeek Copper Mine Certificate Kew Michigan 0016
Michigan Copper Mining Company Stock Certificate 0015
Meadow Mining Company certificate Keweenaw Michigan mi 1899 .. 0014
Mohawk copper mining company certificate Keweenaw Michigan 1923 0007
Humboldt copper company Keweenaw Michigan 1904 - 0006
