Printed Upside Down and Worth $10K: The Error Notes That Make Collectors Rich

December 28, 2025 December 29, 2025 by Jason Michael in Collecting Tips 1 min read

A printing press hiccup. A momentary paper jam. A die that slipped sideways. These manufacturing mistakes created some of the most valuable paper money in existence. Error notes

Jason Michael

Author & Expert

Jason Michael is a Pacific Northwest gardening enthusiast and longtime homeowner in the Seattle area. He enjoys growing vegetables, cultivating native plants, and experimenting with sustainable gardening practices suited to the region's unique climate.

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