One of two pairs of the much sought after BENDIX 6900 TUBES that i will be selling,this pair..red lettering and gold pins ....The real deal.I have about 350 hours on this 10,000 hour pair of tubes.Have not seen any of these for sale for awhile.Your high end tube mongers would ask 600.00 for these.Asking 500.00 for this pair.Shipping and insurance included.I can't find another pair for sale anywhere.These are the real deal and ultimate gamechanger!Please do your research. Thanks for looking.Payment via paypal with no fee.