Made for Fisher company

All have Telefunken <> mark on the bottom.

All matching smooth plate tubes.

These are all test very strong on my Triplett 3344 tube tester.

1500/`525,1550/1550, 1450/15001600/1500.

Minimum 1000/1000.

New 12AX7 tube test 1500 & up on my tester.

Please check the pictures for more information.