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(!!) (Recommended Sylvania) 6EU7 Sylvania branded RCA NOS 1970's (68/32 and 76/32)
(!!) (Recommended) 6SN7GTB Raytheon gray plates low hours/like new 1960's (9/10ma)
(!!) 12AU7A RCA CANADA NOS "D" getter halo 1950's tip is chipped (10.0/10.4ma)
(!!) 12AX7 Baldwin Sylvania "D" getter used/tests like new 1959 (1.9/1.9ma) 1% section balance
(!!) 5751 Sylvania misbranded 12AX7WA NOS 1960's (1.9/1.9ma)
(!!) 5751W1 Sylvania triple mica "O" getter halo used/good early 1960's misbranded 12AX7WA (1.8/2.0ma)
(!!) EL822 Mullard black plate NOS 1974 (51ma)
(!) (#1 12AT7 Value) 12AT7 Sylvania branded Philips black plates NOS 1970's (7.6/8.2ma)
(!) (Best Single) 407A Western Electric NOS 1962 (44/26 and 49/26)
(!) (Best Value Single) 5687WA Sylvania JAN used/good faded printing 1970's (31/35.8ma)
(!) (Best Value Single) ECC82=12AU7 Zaerix East Germany NOS 1970's (12.8/12.0ma) (same Gm)
(!) (Good Value) 6BQ5 Sylvania gray plate used/very good 1960's faded printing (47.5ma)
(!) (READ REVIEW) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (59/40 and 59/40 x 2 tubes)
(!) (Recommended Single) 6EU7 RCA NOS 1970's (51/32 and 60/32)
(!) (SINGLE) 6BQ5 Sylvania black plate NOS 1970's (46ma)
(!) (Single) 6L6WGB=5881 Sylvania black base NOS 1975 (78.5ma)
(!) 12AT7 East Germany branded "M" Mühlhausen NOS 1970's (8.4/9.0ma)
(!) 12AX7A Amperex by RFT East Germany NOS 1970's (Gm=1300/1400)
(!) 12SN7GTA GE NOS 1958 (9.0/7.5ma) (same Gm)
(!) 6BQ5 GE used/good 1960's (35.5ma)
