Matched Pair Sylvania 7C5 Vacuum Tubes Valves Gray Glass 5726 T14 It comes with a box

It comes with a box

Transconductance measured 50/52 for Tube One and 53/52 for Tube Two where minimum (65%) is 25/25 and 100% is 39/39

Both have BW date codes

WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO DETERMINE HOW TUBES WILL INTERACT WITH YOUR ELECTRONICS OR IF THEY WERE MISTREATED IN TRANSIT

short bases

Matched Pair Sylvania 7C5 Vacuum Tubes Valves Gray Glass 5726 T14 It comes with a boxThis matched pair of Sylvania gray glass 7C5 tubes was tested on our Maxi Matcher 2 with 400 volts on the plates and a bias of 36 volt for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 2340 micromhos with a plate current draw of 24. 5 milliamps for Tube One and 2070 25. 2 for Tube Two. (New US made 7C5s typically test with plate current from the mid teens to mid 30s with transconductance from 2300 micromhos