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(!!!!!) (BEST OVERALL PAIR) EL37 Mullard NOS black base and brown base gray plate same build NOS 1962-1966 (90.5ma and 91.5ma)

(!!!!!) (BEST OVERALL PAIR) EL37 Mullard NOS black base and brown base gray plate same build NOS 1962-1966 (90.5ma and 91.5ma)

$ 399.99

1 matched pair) EL37 Mullard NOS gray plate, 2 round getter halos, excellent printing, in white boxes

1 tube) 91.5ma Gm=10,200 (black base) 1962 date code wiped off glass

1 tube) 90.5ma Gm=9800 (brown base) 1966 date code wiped off glass

 

Good NOS range 80-90ma

Good NOS Gm = 10,000

 

Recommended for

- CARR MERCURY 2003
- Fisher 80-AZ

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