Extremely rare GE 5751 "Silver Clip" triple Mica Black Plate, matched pair. No leaks, shorts, gas, or microphony as tested on my newly restored and calibrated Mercury tube tester.
These have been reported by others as maybe the greatest 5751's of all time and may never be duplicated. I have three pair, selling one pair only.
This pair measure NOS/very strong: 1475/1500 Gm Micromhos, where Gm 1000 is 100%.
No original boxes, will pack securely.
Price includes shipping and PayPal in the lower 48.