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Updated August 20, 2026

This auction ended on August 27, 2026. See upcoming auctions from Iowa Surplus & Estate Auctions.
Lot number244
AuctionAUG 27 26 GOLD SILVER BULLION SLABBED KNIVES CARDS
DateAugust 27, 2026 at 6:00 PM CDT
Auction houseIowa Surplus & Estate Auctions
LocationCoralville, Iowa

your prompt to make sure everything looks correct. If the problem persists, please contact support at [email protected].. Error: This task took longer than usual. Check your prompt to make sure everything looks correct. If the problem persists, please contact support at [email protected]. This item is a 1/2 Idaho Goldback, a local voluntary currency note containing 1/2000th troy ounce of 24-karat gold. The obverse features a highly detailed artistic rendering of Gratia (Grace), personified here as a Native American woman, specifically inspired by Sacagawea, carrying a child in a papoose against a scenic backdrop of Idaho's mountains and wildlife. The note is dated 2023 and includes several security and informational features, such as the "GB" logo, a unique serial number, and a statement that the item is a negotiable instrument payable in US gold coin to the bearer on demand. Notably, the Goldback is created using vacuum deposition technology to layer atomized gold between thin protective polymer sheets, resulting in a flexible, durable, and metallic appearance. The reverse side shows a mirrored, translucent version of the front's artwork, which is a characteristic of the specialized manufacturing process used by Goldback Inc. to ensure the gold content is visible throughout the note. Condition: The item appears to be in uncirculated condition, showing crisp edges, vibrant colors, and no visible signs of folding, creasing, or wear. The surface remains clean with sharp detail in the intricate artwork and text. Mint: The item is issued by Goldback Inc. and manufactured by Valaurum, a private mint specializing in vacuum deposition technology. Metal Content: According to the text on the note, it contains 1/2000th Troy Ounce of 24K Gold. The gold is layered between protective polymer sheets. Historical Context: This is a 1/2 Idaho Goldback, part of a local voluntary currency series first launched in Utah in 2019 and expanded to Idaho in 2020. The artwork features "Gratia" (Grace), depicted as a Native American woman, symbolizing the virtue of gratitude and the history of the Shoshone-Bannock tribes in the Idaho region. Strike Type: This is not a traditional struck coin but is created using a proprietary vacuum deposition process where atomized gold is layered onto a polyester film to create a flexible, banknote-like gold bullion product. Grading: The item is raw and ungraded. In the collectibles market, such items are typically handled as "Gem Uncirculated" when coming directly from a strap or original packaging. Goldback, Idaho, currency, 24K gold, Troy ounce, Native American, Sacagawea, numismatic, gold foil, voluntary currency, bullion, 1/2 Goldback, precious metals, legal tender, collectible. Idaho Goldback, 24K gold bullion, 1/2000 troy ounce, gold currency, collectible gold, fractional gold, Idaho gold, gold notes, precious metals, numismatics IMPORTANT BIDDER NOTICE Bidder is solely responsible for determining value

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