Portal:Anniversaries/April 10

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Revision as of 18:10, 18 May 2020 by meta>Stephen Foskett (Created page with ":'''1970''' — The production Beta 21 quartz movement is revealed to the world, along with 20 production models from various Swiss watch companies. <noinclude>...")
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1970 — The production Beta 21 quartz movement is revealed to the world, along with 20 production models from various Swiss watch companies.
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