(!!!!!) (Best Pair) 6SU7GTY=6188 Tungsol 1950's rebranded "5691 NATIONAL" in 1980's black ribbed plates "D" getter halo triple mica (2.3/2.3ma and 2.2/2.4ma) (6SL7GT equivalent)
(!!!!!) (Good Value Single) 6072A GE black plates rebranded National NOS 1970's in AEL Electronics box (2.3/2.4ma) (mic)
(!!!) (BEST VALUE PAIR) 12AU7A=ECC82 RFT East Germany rebranded National and Brimar NOS 1970's same build (9/11ma and 9.2/10.2ma)
(!!!) (Recommended PAIR) 6DJ8 Matshushita JAPAN branded RCA NOS 1973 (15/17.8ma and 16.4/18.2ma)
(!!) (BEST PRICE) 6AQ5 and 6AQ5A Mixed Brands used/good (4 for $9.99)
(!!) (GOOD VALUE) 12AT7=ECC81 Mullard made in Hyperlec Brive France NOS 1970's (8.2/11.4ma)
(!!) (recommended Single) 6SU7GTY=6188 Tungsol 1950's rebranded "5691 NATIONAL" in 1980's black ribbed plates "D" getter halo triple mica (2.3/2.5ma)
(!!) (Recommended Single) EL90=6AQ5 Mullard NOS 1958 (37ma)
(!!) 12BH7A National by Sylvania gray plates used/good 1970's (7.2/7.6ma)
(!) (BEST VALUE) 12AT7=ECC81 Mullard made in Hyperlec Brive France branded ULTRON NOS 1970's (7.4/7.8ma)
5025 Numerical Display tube
5441 National Nixie tube used 1977 (16 pins) (0 in stock)
5870S National UK NOS by Burroughs (0 in stock)
5AU4=5V3 GE FAT BASE large black plates NOS 1958 (52/40 and 54/40)
6AQ5 and 6AQ5A US Brands used/good (20 in stock)
6AQ5A International USA NOS (56ma)
7021=714 National NOS in white box
NL-8037=5031 National NIXIE NOS in plastic bag
