have thick creamy opaque cores that combat the effects of UVA light for longevity of your artwork Guaranteed to last up to 100 years under museum
New Derwent Lightfast Colored Pencils 24 72 100 Colors, Oil-based 4mm Wide Core, 100% Lightfast, No Fade for 100 Years
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Derwent Lightfast Colored Pencils with Wooden Box, 48-Piece Set (2305692)
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