RCA Number Type 38 #38 Vacuum Tube Valve Engraved Base Shoulder Shape NOS NIB 1st Quarter BW01 3 rather than 7

3 rather than 7

Transconductance measured (From left to right): 41

Tube One measured 1900/1900 while Tube Two measured 1900/2250 where new/nominal is 2200

From left to right

new in box Sylvania-MANUFACTURED

RCA Number Type 38 #38 Vacuum Tube Valve Engraved Base Shoulder Shape NOS NIB 1st Quarter BW01 3 rather than 7This new old stock, new in box RCA number type #38 tube tested to spec on our Paul Hart calibrated TV7 U. BECAUSE OF THE BIZARRE, INTRUSIVE AND DRACONIAN GERMAN PACKAGING REGULATIONS AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM WE NO LONGER SHIP TO GERMAN ADDRESSES. WE WILL HAPPILY SEND YOUR PACKAGE TO A NEIGHBORING COUNTRY OR MAKE SUITABLE ARRANGEMENTS. IN 2021 WE PURCHASED 150,000 VACUUM TUBES. IF IT'S NOT LISTED, WE PROBABLY