ONE Amperex ECC83 12AX7A tube

Made by GE in USA in 1990's

Tubes test at 1200, 1200 and where pass/fail is 1040 micromhos

This tube does test low, but best for collectors and display

The original box is nice with original paperwork

O getter / Halo getter

Bugle Boy white logo excellent

Short grey ribbed plates

Tested on Amplitrex AT-1000 tube tester (fixed bias mode)

FULL TEST RESULTS:

Tube 1:

1200 gm / 1200 gm (uMhos)

0.6 mA / 0.7 mA Plate Current Emissions (iP)

% Test results in percent %

75% / 75% gm

50% / 58% mA

NO SHORTS / ZERO GAS

USA Shipping = USPS

international shipping = UPS or FedEx 7 day delivery signature service or Global Post 10-20 day delivery depending on your country