The Sylvania 5692 tubes in this precisely matched pair have black plates, disc getters, and RCA labels (their construction resembles a Sylvania 6SN7GTB more than the older 5692s made by RCA and CBS). Both tubes test as new and are precisely matched.
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This 1950s military spec CBS 6SN7WGTA has black plates and a side getter. The red print on the base has the CBS logo and reads "JAN-CHY-6SN7WGTA" (partial/missing). Tube tests as new with low noise.
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The 1950s GE 6SN7GTB tubes in this matched pair have side horseshoe getters and gray plates with copper grid posts. The print on the glass has the GE logo. Both tubes test as new with balanced sections and low noise.
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The GE 6SN7GTB tubes in this precisely matched pair have side O getters and gray plates with copper posts and a connecting filament. The white print on the glass has the GE logo. Both tubes test as new with balanced sections and low noise.
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This 1940s Ken-Rad VT-231 is a military spec 6SN7GT tube type. It has black glass and a bottom getter. The silver label has the Ken-Rad logo and reads "JAN-CKR-6SN7GT VT-231." Tube tests as new.
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This 1940s Ken-Rad VT-231 is a military spec 6SN7GT tube type. It has a bottom getter with lots of flashing and staggered black plates with copper grid posts. Tube tests as new with balanced sections and very low noise.
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The rare 1940s Raytheon VT-231 tubes in this precisely matched pair are military spec 6SN7GT type tubes. They have black plates with copper grid posts and bottom getters. The orange labels have the Raytheon logo and read "JAN-CRP-6SN7-GT VT-231."
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This rare 1954 RCA 6SN7GTA tube has a short bottle, dual side D getters, and black plates with copper grid posts. The silver print on the base has the RCA logo. Tube tests as new with balanced sections and very low noise.
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This 1950s-1960s RCA 6SN7GTB tube has a medium bottle, bottom D getter, and staggered black plates with copper grid posts. The black base has silver or red print with the RCA logo. Tube tests as new with very low noise.
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The 1971 RCA 6SN7GTB tubes in this precisely matched pair have side O getters and black plates with a narrow coin base. The red print on the glass has the RCA logo. Both tubes test as new with balanced sections and low noise.
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The rare early 1950s RCA 6SN7GTB tubes in this precisely matched pair have staggered black plates with copper posts, short bottles, and side D getters. The silver print on the bases has the RCA logo. Both tubes test as new with balanced sections.
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This 1953 military spec RCA 6SN7GT tube has a medium bottle and staggered black plates with copper grid posts (the same construction as the gray glass VT-231). The silver print on the base has the RCA logo and reads "JAN CRC-6SN7-GT." Tube tests as new.
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This 1951 Sylvania 6SN7GT tube has a medium bottle, bottom getter, and early black plates with 2 rivets and copper grid posts. The full black base has green print with the Sylvania lightning logo. Tube tests as new.
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Price: From $22.00 to $64.00
This early 1950s Sylvania 6SN7GT / 6SN7GTA tube has a short bottle, early black plates, and lots of chrome flashing. The full black base has green print with the Sylvania lightning logo. Click "more info" for current availability.
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This 1951 Sylvania VT-231 is a military spec 6SN7GT tube from the "Bad Boy" era of Sylvania 6SN7 production (1949-1953). The early black plates have 3 rivets with copper grid posts. Tube tests as new with balanced sections and low noise.
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The 1950s Sylvania 6SN7GTA tubes in this precisely matched pair have black plates and halo getters with lots of chrome flashing. The black bases have green print with the old Sylvania lightning logo. Both tubes test as new with low noise.
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This 1950s Sylvania 6SN7GTA tube has a medium bottle, black plates, and a halo getter with lots of chrome flashing. The black base has green print with the Sylvania logo. Tube tests as new.
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The 1969 Sylvania 6SN7GTB tubes in this precisely matched pair have black plates and halo getters. The red print on the bases has the DuMont logo and matching date codes (69-02). Both tubes test as new with balanced sections.
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This 1960s Sylvania 6SN7GTB tube has a tall bottle, black plates, and a halo getter with lots of chrome flashing. The yellow print on the base has the Sylvania lightning logo. Tube tests as new with low noise.
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This 1960s Sylvania 6SN7GTB tube has a medium bottle, black plates, and a halo getter with lots of chrome flashing. The black base has yellow or green print with the Sylvania logo. Tube tests as new.
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This early 1950s military spec Sylvania 6SN7WGT has a short bottle, early black plates, an extra support rod, and a nice chrome dome. The green or gold print on the brown base reads "JAN-CHS-6SN7WGT." Tube tests as new with low noise.
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This 1960s Tung-Sol 6SN7GTB tube has has a tall bottle, black plates, and a halo getter. The black base has white print with the Tung-Sol logo. Tube tests as new with very low noise.
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This new production Tung-Sol 6SN7GTB tube was made in Russia. It has black plates, a top dish getter, and extra support rods. The brown base has white print with the Tung-Sol logo.
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The new production Tung-Sol 6SN7GTB tubes in this precisely matched pair were made in Russia. They have black plates, top dish getter, and extra support rods. The brown bases have white print with the Tung-Sol logo.
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