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Cover of The Flash (2016) #21

The Flash (2016) #21

DC 2016–2023 series Cover date Jun 2017

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About this issue

The Flash #21 (2016) is issue #21 of DC's The Flash (2016–2023), with a cover date of June 2017. grailworth values it from 36 recorded sales, most recently on Oct 25, 2026, and from how comics like it move in value from grade to grade.