These are in original boxes and very clean near MINT tubes and with the rarer gray chimney heat-sync on top. Fully tested and auditioned, very tightly matched in both mutual conductance (102%/103%) and current draw (< 1mA apart) when run in our amp. 

Biased AND auditioned in both our p/p guitar and single ended stereo amps to insure their performance. These sound awesome in both of our amps with wonderful detail and sweet vintage GE TONE from these fine tubes! You can't go wrong with GE 6l6gc power tubes! 

Vintage USA tubes sound WAY better than China or Russian tubes and outlasts them up to 5 times longer too!

You can safely use these in any 6L6 type amp that calls for 6L6, 6L6G, 6L6GB, 6L6GC, 7581 and KT66 tubes with no mods needed.

Tube Number       6L6GC

Date codes          HN, FN (1982) 

Plate style            gray

Chimney              gray

Glass style           clear short bottle

Test results (typical new NOS = 5000 Gm, 45.0mA (pp), 60mA (se)

 Tube-2 = 5150 Gm, 49.0mA, 64.4mA

Sold as is, guaranteed as described.

                                      We have others here   ==>     Debi's Vintage Electronics Boutique

keyword: TUBES, VALVES, ROHR, LAMP, VALVOLA, 튜브, 管子, TUBO, チューブ, PUTKI )