For sale:

Matched quad Svetlana black plate rectifier tubes. NOS, NEW.

They are also known as "winged C".

All are tested and carefully matched.

All test more than 100%.

Highly sought Black Plate tubes.

Excellent rectifier tubes. Just Google it.

Brand new, direct from factory in Russia.

No customs expenses, I am located in EU (Croatia).

100 eur + shipping / 4 tubes.
If you need more than 4, just let me know.

My feedback is 100% positive on both:

eBay (Zeus-the-thunderer) and as Audiobb on Audiogon.

Over 600 transactions combined.

Buyer will also receive photos of packing and shipping the package from Post office.