3 Vintage NOS GE made Sylvania branded 12ay7 vacuum tubes.

Tubes date to the 1960s and feature Grey plates with Slanted D getters. 

Tubes are branded with the sylvania branding but feature the GE etching in the glass and as such are made by GE in the USA. 

Tubes have been tested on a recently Calibrated Hickok TV7 tube tester with a digital meter and test as follows:

Tube1 : 56.0/58.2

Tube2 : 54.8/56.5

Tube3 : 51.6/58.7

Minimum good value on a TV7 tester for a 12ay7 tube is 32 which represents approx 40% life left. The tubes test within or near the NOS range!

Tubes are guaranteed to be in good working order upon delivery. If a tube ends up bad within 1 week of delivery just ship it back for a full refund on the bad tube minus shipping costs.

  See pictures for details.