NOS 53KU- Cossor Made 1948-1953 brown base/grey plates- solid round disc side getter halo in original Cossor boxes! The best of the best! Made by A.C. Cossor / Cossor House Highbury Grove/High Wycombe UK.
$899.98 for the matched pair( Please note: Only one matched pair is left in stock; identical matching at 198mA/198mA)
Mullard GZ32 NOS (branded Amperex)- Mint in original box wonderful sub for the 5V4 tube. Made in 1958! Just $199.99. This is a suitable replacement for any GZ32=5V4G=CV593 tube type. Various brands available.