I have a quantity of 4 unused Philips/Rogers 6156/4-250a tubes and one used 6156. The 6156 is the graphite plate version of a 4-250a.
$100 each for the NOS tubes, and $50 for the good used 6156.
Would prefer to sell these as a package. Let me know.
All plus shipping cost.
racalra17@gmail.comAl VE3AJM