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Osram N329 box

N329 exhibit
    
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The box is 50 mm square and 133 mm long. The valve was held in place by paper wadding inside a corrugated card wrap. The all glass N329 dates from 1953 and the box is of a size suitable for a large glass octal valve. An advert from 1950 showes this style of box for Osram valves.

 

 
 
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