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Fueled by Clouds & Coffee: Lightfastness is a Philosophical Issue (and a Longevity Test of Zig Markers)
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Faber-Castell PITT Artist Pen - High Lightfastness - Pigmented India Ink - Waterproof - Odorless, Acid-Free, and pH-Neutral - 1-5 mm Tip - Black - Walmart.com
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