(Manufacturer Mullard. Mullard Code I63 B5A4 / B5B4. Number 12AX7 ECC83. Pulled from a Hammond tube organ. T he Tube tested at 85% (2.03125 x 42.0 = 85.3 %). 3 2 = 65% of the value of a new tube. Tested Plate 1) 42.0 / 44.0 Plate 2) 42.0 / 44.0.
Item Tag: United Kingdom
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MULLARD ECC83 BLACKBURN 12AX7 MC1 LONG PLATE TIGHT BAL TEST NOS VINTAGE 1957
Average NOS test results for 12AX7’s 1250 microhmos on the Hickok 600A.
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Nice Mullard 12AX7A ECC83 Tube I63 Triplett Tested 12AX7 B339 7025 L@@K!
Here we have for sale is a nice Mullard 12AX7A ECC83 Tube. Strong tested used tube with loads of life still to enjoy. I63 series tube with the 14mm grey plates and O-getter. Made in the Mullard factory England.
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Nice Mullard 12AX7 ECC83 Tube I63 Triplett Tested 12AX7A B339 7025 L@@K!
Here we have for sale is a nice Mullard 12AX7A ECC83 Tube. Strong tested used tube with loads of life still to enjoy. I63 series tube with the 14mm grey plates and O-getter. Made in the Mullard factory England.
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12AX7A/ECC83 “RCA” Mullard MaxiPreamp2/TV-7 Tested (1) tube lot
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
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LOT OF 5 MULLARD 12AX7/ECC83 TUBES I61 TYPE (1959-1964 SHORT PLATE) LOW TEST
Marked “Dumont”, I61 B3C3, reads 38/40 (1022-348 date code 1963). Marked “Eico”, I61 B3D5, reads 43/34 (1022-412 date code 1964). Marked “Heath”, I61 B9D, reads 35/36 (1022 941 date code 1959). Marked “Heath”, I61 B9E, reads 30/36 (1022 941 date code 1959).
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12AX7/ECC83 Daystrom 161 code Mullard MaxiPreamp2/TV-7 Tested (1) tube lot
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
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3- MULLARD BLACKBURN 12AX7 ECC83 TUBE (I61-series circa 1961) Strong Trio?
All three tubes tested 140+/140+ on my Eico 666 tube tester where 80 is listed as a minimum value. Nice strong trio with gray plates and halo getter. Please email with any questions or concerns. Thanks for looking!
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12AX7A/ECC83 Mullard MaxiPreamp2/TV7 tested (1) tube lot
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.