Komsomol Membership Badge.

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Here is a 1932 Membership Booklet to Shalva Vasil'ev Abashvili. Born in 1907 and member from March 1924 (within 2 years of it going "All-Union").

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Here is a Membership to Ivlian Tejmurazovich Todua from 1975 (when he was 50!) to Zugdidi Region Komsomol.

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Here's a late example of the Badge that can often be picked up in vast numbers for cents.