crwdns2944766:0crwdne2944766:0
crwdns2918718:0crwdne2918718:0crwdns2935091:0crwdnd2935091:0crwdne2935091:0
crwdns2943215:0crwdne2943215:0
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Flip-digit clocks were a common electromechanical version of digital clocks, especially in the last decades of the last millennium. Copal was a major manufacturer from Japan.
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