Quad (4) 5751 greyplate triple mica Premium industrial grade 12AX7, GE 5-star broadcast NOS.
These are the "triple mica" version.
Grey plates and matching date codes.
Original boxes - one has a broken flap.
ALL Tested around the 102 / 103 range.
Tested with Sencore TC136A Tube Tester where good range is 70 - 130. This is
the only testing done - I have no equipment to test the performance or sound output.
What you see in the photos is exactly what you get ….……Sold AS IS…....SO………no warranty……
Please see photos and ask questions if needed before bidding.
PayPal Payment due at end of listing ……. Buyer pays all shipping costs.