PL509 40KG6 Philips Blackburn, made in England. True triple mica construction and three holes in plates.

PL519 40KG6 PL519 Philips Blackburn England PL519 40KG6 PL519 Blackburn England

“AAA” Philips type code for PL509, B1J2 codes.Triple mica spacers clearly visible on photos above.

 

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This Post Has One Comment

  1. Chris Russo

    Do you have a matched quad of Philips mini watt PL 509 tubes ?

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