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(!!!!) 56 Arcturus Blue Balloon engraved base tests like new 1930's (5.0ma)
(!!!) (#1 56 National Union Pair) 56 National Union rebranded Western Electronics NOS 1940's (5.0ma and 5.2ma)
(!!!) (Best Pair #1) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's slightly tilted glass (6.1ma and 6.1ma) 1-2% matched
(!!!) (Best Pair #2) 56 Sylvania black plate NOS 1940's branded Western Electronics 1946 slightly tilted glass (5.9ma and 6.0ma)
(!!!) (Best Pair #3) 56 Sylvania black plate NOS 1940's branded Western Electronics 1946 slightly tilted glass (5.5ma and 5.6ma) (same Gm)
(!!!) (Best Pair #4) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's slightly tilted glass (5.0ma and 5.2ma)
(!!!) (Best Pair) 56 National Union rebranded Western Electronics NOS 1940's (6.5ma and 6.9ma) (Highest mA and Gm)
(!!!) (Recommended Pair) 56 National Union rebranded Western Electronics NOS 1940's (4.9ma and 5.1ma)
(!!) (Pair #3) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's one tube has slightly tilted glass (5.2ma and 5.5ma)
(!!) (Pair #4) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's one tube has slightly tilted glass and plate (5.4ma and 5.4ma)
(!!) (~ Best Value Pair ~) 56 Sylvania test like new 1940's (5.3ma and 5.5ma)
*** $2.99 each SALE *** 5-8 pin tubes SOLD AS-IS UNTESTED (Minimum 5 tubes purchased) (select tube # at checkout)
*** (BEST PRICE) *** 56 National Union and Sylvania rebranded Western Electronics NOS 1940's (10 in stock)
56 GE used/good 1940's (4.2ma)
56 Made in Holland NOS 1940's (5.1ma)
56 National Union engraved base used/tests like new 1930's (6.0ma)
56 National Union used/good 1940's (5.3ma)
56 National Union used/good 1940's (5.9ma)
56 National Union used/good 1950 small faded getter (4.1ma)
