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Companie Des Compteurs (Barthelemy)

 

 

 

1928 30 line scanning disk

 

 

 

1928 30 line scanning disk

 

1929 Setup for the French Postal Department (PTT)

 

 

 

1929 Weiller Drum 30 Line

 

 

 

 

1932 60 line scanning disk

 

(Courtesy of Jerome Halphen)