Four (4) No 6Z4 84 Philco vintage vacuum tubes, ST shape, made in USA,

tubes have black ribbed plates, clear top, engraved base,

bottom side foil getter, mica snubbers, tube tests: 

82, 82 %

88, 80 %

78, 80 %

76, 72 %

Price is for all tubes pictured.

We test all tubes we sell! We will combine shipping! Check out my other tubes!

 Tested on Triplett tube tester for shorts and leaks as well.

Scale 1-100, good quality percentage on my Triplett starts at 54.