00A - 99Z
The earliest of the tubes had just a two digit designation. Things can get confusing with these tubes though as some use a three digit designation with the first digit just used for brand identification. As a general tube, if your tube is the earliest (globe/balloon) shape and it has a three digit number, drop the first digit. So a UX-301A is really just an 01A. Or a 450 is really a type 50.
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On Sale
NOS NIB Date Matched Pair 1962 RCA 6850 USA Plate 2 Bottom D Get Vacuum Tubes
RCA
Now: $33.53Was: $37.26Tube Type / Number: 6850 Actual Brand*: RCA Printed Brand: RCA Quantity of Tubes: Date Code Matched Pair Plate Construction: Silver/Black Getter Construction: 2 Bottom D Country of Manufacture: USA Visible Date Codes: 62-52 (both) Lettering...Now: $33.53Was: $37.26 -
On Sale
NOS Matched Pair GE JG-5686 Black Plate Fat D GET Windmill 3 Mica Vacuum Tube
GE
Now: $9.91Was: $11.01Matched, Tested & Guaranteed Vacuum TubesAll tubes are guaranteed to be 100% as described or your money back. We are known for our excellent customer service! All tubes have been tested for mutual transconductance, shorts, leaks, gas and noise on one...Now: $9.91Was: $11.01 -
On Sale
NOS RCA USA Type # USN-CRC-89 Black Plate Brown Base Smoked Glass Vacuum Tube
RCA
Now: $9.91Was: $11.01Matched, Tested & Guaranteed Vacuum TubesAll tubes are guaranteed to be 100% as described or your money back. We are known for our excellent customer service! All tubes have been tested for mutual transconductance, shorts, leaks, gas and noise on one...Now: $9.91Was: $11.01 -
On Sale
Tung-Sol USA Type 89 Black Plate BTM Thimble Get Engraved Vacuum Tube 88%
Tung-Sol
Now: $3.16Was: $3.51Tube Type / Number: Type 89 Actual Brand*: Tung-Sol Printed Brand: Tung-Sol Quantity of Tubes: Single Plate Construction: Black Ribbed Getter Construction: Bottom Thimble Country of Manufacture: USA Visible Date Codes: 42097 Lettering Condition: ...Now: $3.16Was: $3.51 -
On Sale
NOS Philco USA Type 89 Black Plate BTM D Foil Get Engraved Vacuum Tube
Philco
Now: $5.18Was: $5.76Tube Type / Number: Type 89 Actual Brand*: Philco Printed Brand: Philco Quantity of Tubes: Single Plate Construction: Black Ribbed Getter Construction: Bottom D Foil Country of Manufacture: USA Visible Date Codes: 70 Lettering Condition: 100...Now: $5.18Was: $5.76