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Jack Armstrong#7

Jack Armstrong #7

Jun 1948 · Parents' Magazine Press · 0.10 USD
“Jack Armstrong Solves the Mystery on the Diamond”
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Full plot ⚠ may contain spoilers

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Jack Armstrong visits Vic Hardy at his lab and learns facts about paper currency and how to detect a counterfeit bill. Then the lesson gets put to practical use when counterfeiters are found in the area and Vic and Jack have to help capture the gang.

Plot details indexed by the Grand Comics Database (CC BY-SA).