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Dual triode valves with eight pin octal base

6SN7GT Super RARE Brimar coated Tall Glass Holy Grail Best Sounding valves Tubes

Brimar coated 6SN7GT £ 300 pair; Quartet £ 550

6SN7GT Super RARE Brimar Tall Glass Black Plate Suspended Arched Top rods tested 100%

Brimar Tall Glass 6SN7GT £ 400 pair; Quartet £ 750

6SN7GT Tallest CV1988 KB/N by BRIMAR UK Carbon Plate Large Square Getter with suspension rods on top

Brimar CV1988 KB/N £ 400 pair; Quartet £ 750

6SN7GTY CV1988 KB/FB limited edition Brown Base Square Getter

Brimar 6SN7GTY pair £220; matched quartet £ 400

6SN7W Sylvania metal base B65 equivalent Holy Grail audio tubes valves black plate top getter

Sylvania 6SN7W £ 800 pair

Sylvania 6SN7W £ 1400 quartet

B36 Marconi full cup getter audio double triodes 12SN7GT coated glass codes FE 4 and GE 4

Marconi B36 cup getter £ 180 pair.

B36 Marconi rare metal base square getter coated glass codes KE 4 and KJ 4

Marconi B36 double triode metal base £ 350 pair.

B36 Marconi red and green decal 12SN7GT cup getter coated glass codes FL 4 and GD 4

B36 Marconi cup getter £ 300 pair.

B36 Marconi same etched code on glass LK 4 brown base square getter tested 100%

Marconi B36 tested 100% emission same code on glass GBP 350 pair.