This 1950s Arcturus 6SL7GT tube has black plates and a bottom getter. The red print on the base has the Arcturus logo. Tube tests as new with balanced sections and low noise.
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This 1953 CBS 6SL7GT tube has bottom getter and black glass. The white print on the base has the CBS Hytron logo. Tube tests as new with balanced sections and low noise.
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This 1953 GE 6SL7GT tube has a bottom getter and black glass. The white print on the base has the GE logo. Tube tests as new.
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This 1950s GE 6SL7GT tube has a short bottle, nickel plates, and a side getter. The black base has white print with the GE logo. Tube tests as new with balanced sections.
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This 1950s Raytheon 6SL7GT tube has black plates and a bottom getter. The yellow print on the base has the Raytheon Uniline logo. Tube tests as new with balanced sections and low noise.
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This 1954 Raytheon 6SL7GT tube has gray plates and a bottom getter with lots of flashing. The yellow print on the base has the Raytheon logo. Tube tests as new with balanced sections and low noise.
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This 1958 RCA 6SL7GT tube has black plates and a bottom D getter. The silver print on the base has the RCA logo. Tube tests as new with balanced sections and low noise.
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This 1960s RCA 6SL7GT tube has black plates and a bottom D getter. The red print on the base has the RCA logo. Tube tests as new with balanced sections and low noise.
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This unusual RCA 6SL7GT tube has a short bottle with gray plates plates and a bottom getter. The red print on the glass has the RCA logo. It is labeled "Made in W. Germany" but this tube was probably made in Japan. Tube tests as new with low noise.
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The unusual RCA 6SL7GT tubes in this precisely matched pair have short bottles, gray plates, and bottom getters. The red print on the glass has the RCA logo. They are labeled "Made in W. Germany" but they were probably made in Japan.
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This 1950s Sylvania 6SL7GT tube has the same construction as the military spec VT-229, with round gray plates and a bottom getter. The black base has the Sylvania lightning logo. Tube tests as new with low noise.
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This 1960s Sylvania 6SL7GT tube has round black plates and a top getter. The yellow print on the base has the Sylvania lighting logo. Tube tests as new.
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This 1960s Tung-Sol 6SL7GT tube has a tall bottle, ribbed gray plates, and a halo getter. The black base has white print with the Tung-Sol logo. Tube tests as new with balanced sections and low noise.
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