PART VII. Post-Strike Mint Modifications:

Post-Strike Chemical Treatment:

Experimental Rinse for Sacagawea Dollars

Definition: In an attempt to prevent tarnishing, small numbers of Sacagawea dollars were immersed in a chemical bath that turned them a distinctive brown color.  The experiment was quickly abandoned.

The 2000-P Sacagawea dollar pictured below was exposed to an experimental anti-tarnishing agent.

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Images are courtesy of Heritage Auctions.