Red Oxblood Octal 8 Pin Tube Base For 6L6GC, 5U4GB, 6V6GT And Similar Based Tubes.
These look like the bases used on RCA "Special Red" Series premium tubes from the '50s-'60s. What a great idea! Outside diameter 1.304", inside diameter 1.190", height .879". Nickel plated brass pins. Brand New production from China.
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