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Winona Copper Co Houghton Michigan 0137
Algomah Mining Co Ontonagon Michigan 0067
Big 10 Inch Native Copper Specimen prospected from Keweenaw, Michigan
4.6oz Crystallized Native Copper w Green Prehnite - Iroquois Mine, Keweenaw Mich
Seneca Mining Co Keweenaw Michigan Stock Certificate 0141
Mohawk Mining Co Blue Certificate Keweenaw Michigan 0139
10.3oz Very Dense Glacial Float Copper Nugget w Natural Green Patina - Michigan
3.25” Pretty Native Copper Specimen w Natural Matrix - Keweenaw, Michigan
Mayflower - Old Colony Copper Co Calumer Mi 0034
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
2.75” 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
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
