Mullard KB/D ECC83 M8137 12AX7 Box Plate Dual Print Valve NOS 641 R6J4 (V54)

Mullard KB/D ECC83 M8137 12AX7 Box Plate Dual Print Valve NOS 641 R6J4 (V54)
Mullard KB/D ECC83 M8137 12AX7 Box Plate Dual Print Valve NOS 641 R6J4 (V54)

Mullard KB/D ECC83 M8137 12AX7 Box Plate Dual Print Valve NOS 641 R6J4 (V54)

641 R6J4 Code in the Glass. CV4004 ECC83 M8137 12AX7 Valve Tube.


Mullard KB/D ECC83 M8137 12AX7 Box Plate Dual Print Valve NOS 641 R6J4 (V54)