Raytheon VT-52 Matched Pair Tubes (SR3#10)

This is a nice rare pair Raytheon VT-52 tubes from my private collection.

Engraved bases.

Testing strong  with matched values and in excellent physical condition.

Details

Black Bases

Black Box Plates

Hanging Filaments

Ceramic Mica

Barrel Getter

Engraved Bases

Test Results

Fully Tested on my calibrated Philco 9100.

They were tested as 45’s at 6.3V heater voltage.

Tube1: 1350 micro-mhos 32.6 mA

Tube2: 1350 micro-mhos 27.4 mA

Minimum 1480 micro-mhos

New         1850 micro-mhos

NOTE

There is no setting on my Philco 9100 tester for the VT-52 tubes.

I used a heater voltage of 6.3V not 7.0V.