Model 257 or 151 tester on 6/25/26. Worn, mismatched, RCA 6SN7GTB box.
Item Tag: GE
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GE 6SN7 GTB 1960s CHROME SIDED HALO TALL BLACK BASE PERFECT MATCHED SET NIB
Production Year: 1960s. (Original GE Boxes). Mutual Conductance: The 750 is a dynamic mutual conductance tester. This is a more sophisticated test than a basic emission only test, which only checks the cathode’s ability to emit electrons (super heated).
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Pair GE 6SN7GTB Coin Base Vacuum Tubes – Tested NOS/NIB – Matched Pair
Gray Plates, Side “O” Getter. Minimum Gm 1700. A new 6SN7 tests2600 – 2700 per section. Date Codes IR.
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GE 6SN7GTB Vacuum Tube Vintage Tested Good with Original Box
Model 257 tester on 6/25/26. Original GE box has minor signs of wear/age.
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NOS Pair GE 6SN7 GTB CHROME SIDED
Pair of Closely Matched GE 6SN7GTB Twin Triodes. Tested on Daniel Nelson Calibrated TV7/U. Tube 1: 102/107 Tube 2: 102/117 minimum is 50.
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Pair 1957 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Pair 1956 GE Side Getter 6SN7GTB Tubes. These tubes test 90/90 and 85/85 where a new tube tests 85/85.
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Matched Pair 1958 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Matched Pair 1958 GE Side Getter 6SN7GTB Tubes. These tubes test 85/85 where a new tube tests 85/85.
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Pair Of GE 6SN7GTB Tubes – Black Plate – Filament Bridge – Hickok Tested
This tube was tested on a Hickok 600 tube tester. Tube with date code EW tested 3000/2700 gm.
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2pcs NOS GE 2-PRONG Electric Cord Plug End GE4399-12D 125V QUICK CLAMP PLUG LT21
2pcs NOS GE 2-PRONG Electric Cord Plug End GE4399-12D 125V QUICK CLAMP PLUG LT21