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  1. Brimar CV492/ECC83 12AX7 KB/FD Half Box Plate Tested Valve Tube (K768)

    CV492 ECC83 12AX7 Brimar KB/FD grey Plate Used Old Stock Valve Tube Code 4A0/1573 1960 1573 = designation code for brimar cv492/CV4004 Hickok gm 1700/1900 mhos gm

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  2. Brimar 12AX7 / ECC83 Valve/Vacuum Tube, AVO Tested - (#14)

    A used Brimar 12AX7 tube in full working order. The date and model codes are, 5F0/157 (from the 1960s). ia (mA) - 1.2. Data Book Specification. GM (mA/V) - 1.75. ia (mA) - 1.4.

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  3. Brimar CV492/ECC83 12AX7 KB/AD Used Tested Valve Tube (KA75)

    CV492 ECC83 12AX7 Brimar KB/AD grey Plate Used Old Stock Valve Tube 1968 Hickok gm 1600/1650 mhos gm

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  4. Brimar CV492/ECC83 12AX7 KB/FD Half Box Plate Used Tested Valve Tube (K764)

    CV492 ECC83 12AX7 Brimar KB/FD grey Plate Used Old Stock Valve Tube Code 4A0/1573 1960 1573 = designation code for brimar cv492/CV4004 Hickok gm 1600/1750 mhos gm

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  5. Brimar England ECC83 12AX7 Short Plate Valve Tube Used Tested Strong (K756)

    Brimar England ECC83 12AX7 Short Plate Valve Tube Used Tested Strong Hickok 1200/1300 mhos gm

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  6. Brimar UK ECC83 12AX7 Ladder Plate Valve Tube Tested (KA76)

    Tested 2000/1600 umhos gm 2B4/1574 1962

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  7. CV492 ECC83 12AX7 Brimar KB/FD Half Box Plate Used Old Stock Valve Tube (M488)

    CV492 ECC83 12AX7 Brimar KB/FD grey Plate Used Old Stock Valve Tube Code 4A0/1573 BK600 = 89/92 New 89 up Hickok test 1850/2000 mhos GM

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  8. CV492 ECC83 12AX7 Brimar KB/FD Half Box Plate Used Old Stock Valve Tube (M451)

    CV492 ECC83 12AX7 Brimar KB/FD grey Plate Used Old Stock Valve Tube (M451) BK600 = 91/92 New 89 up

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