Use the Czech Republic certified coverage record to assign foreign “F” quarters of
            coverage to the U.S. coverage record.
         
         
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                     There is no minimum amount of Czech coverage earned before the U.S. can use it. 
 
 
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                     SSA will credit one quarter of coverage in a calendar year for every 90 days of coverage
                        certified for that year by CSSZ.
                      
 
 
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                     All periods of coverage certified by CSSZ are creditable unless they are “Substitute Periods” – do not  use these periods of coverage.