Matched codes, perfectly balanced, tested full NOS. Calibrated TV7-D/U test results: 59/60, 60/60. (Minimum/Good range on the TV7 is 40)
1958 AMPEREX BUGLE BOY 5AR4 GZ34 f31 x8D TUBE TV/7 AMPLITREX TESTED
Codes are f31 x8D. 5AR4 / GZ34 Tube. This tube is stamped on the base, not etched in the glass. It is very close to NOS testing on TV/7 and NOS Testing on Amplitrex. Balanced sections. Amperex Bugle Boy.
Pair of vintage NOS Mullard GZ34 / 5AR4 rectifier tubes, f32, 7-notch, Blackburn
These have seven notches on the edge of the plates and a single halo getter. They are labeled “Gt. Britain” on the tubes and boxes. One of the tubes has the f32 production code etched on the glass but I can’t see the code on the second tube.
Pair Matched RCA GZ34 5AR4 Tubes Copper Lined Plates TV7 TESTED Near NOS LEVELS
For sale is matched RCA 5AR4 / GZ34 vacuum tubes with copper lined plates. They tested at near NOS levels where the minimum for good tubes is 40.
NOS/NIB GE GZ34/5AR4 O-Getter Rectifier Vacuum Tube Made in USA 1961
Rectifier Vacuum Tube. Made in 1961 in USA. Made in USA. Date code: 61-09. Tightly balanced sections! where minimum good value is 54.
5AR4/GZ34 Psvane rectifier tube tested new black base
AAAAA+++++.
NOS Mullard labeled RCA 5AR4/GZ34 7 Notch Version. Tests 65/65 on TV7/U.
NOS Mullard labeled RCA 5AR4/GZ34. Matched Pair. Tube 1: 65/65.
Matched Pair Mullard 5AR4 GZ34 FAT BASE Rectifier Tubes Amplitrex Tested NOS F31
Both tested NOS and matched using an Amplitrex AT1000 tube tester as photographed.
ARS 5AR4/GZ34 Grey plate rectifier tube 100 each side NIB NOS!
I back my tubes up. The pictures shows a Mullard 5AR4/GZ34 Grey plate rectifier tube 100 each side NIB NOS! These are well regarded early Chinese production. Price reflects demand. Tube Tester Scale reads.
NOS NIB GE 5AR4 GZ34 Japan Rectifier Tube
We cannot be responsible for what tubes test in another tester.