Are these genuine S4 Pars?

 Hey all I recently got these second hand for dirt cheap through a company who were doing an install and these were being removed to be replaced with LED cans. Anyway they were advertised on Ebay as genuine White S4 575w Pars. Now they work perfect and look and feel almost immaculate but my question is would there be any obvious ETC markings I should be able to see? I thought the power cables may say ETC but nothing.

Cheers,

Paul

 

       

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