They are cancelled and have stamps and range from the early 1900's - 1920's. The company, incorporated in Minnesota in 1905 to operate highly productive copper mines in Butte, Montana, suffered severe production declines following the catastrophic 1917 Granite Mountain/Speculator Mine fire. It permanently ceased independent operations when it was sold to the Anaconda Copper Mining Company in 1942. Most certificates issued by this company were printed by the American Bank Note Company. They feature a beautifully detailed, engraved vignette of two miners using a pneumatic drilling machine to prep a mine wall for blasting. Please ask specific questions on details, condition, and shipping prior to bidding, ALL ITEMS ARE SOLD AS IS, and the bidder will be responsible for payment. We box and ship what we can to keep costs low, and use USPS and UPS. Large items, extremely fragile, and high value items will be packed by UPS. Quotes available on request

  • Dimensions: 7.5" x 11.25"
  • Condition: Very Good Condition

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by One Source Auctions
July 27, 2026 5:00 PM EDT
177 S. Main St.
Canandaigua, NY, US 14424

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Bid Increments
From: To: Increments:
$0 $49 $5
$50 $99 $5
$100 $199 $10
$200 $499 $25
$500 $999 $50
$1,000 $2,999 $100
$3,000 $9,999 $250
$10,000 + $500