I have one pair of the Bendix 6900 Tubes for sale. These are direct replacements for 5687 tubes and provide superior sonics. These are the best sounding tubes available for applications of the 5687's.
They test at 10500/11000 and 9700/9400 No shorts/No gas
These have long life 10,000 hours and are very reliable. Typically these go for over $600 on Ebay but since these are used I can offer them at $360 for the pair.
They sound fabulous in Modwright Signature Truth series players.
Thanks for viewing.