The positive side. A black plastic insulator is visible.

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   Boosty Collins (ieure@retro.social)'s status on Tuesday, 28-Nov-2023 12:06:45 JST Boosty Collins

   in reply to

   So, check this out! I've never seen this before, but this axial cap has some kind of printing error, and is not correctly indicating the negative lead. The light blue strip should point to it.

   Don't fret! The negative side of an axial capacitor is always the one where you can see metal.