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WTB: two pairs 6H30P DR / 6N30P DR

Looking to buy russian super tubes 6N30P DR, two pairs
I would like to get them in a exchange for some tubes which I collected, as an example:

two pairs of NOS 46 type tubes TUNG SOL
6c8g round plate tung sol
8pcs of Sylvania 5x4g
quad e182cc
 
As a person who has worked with these tubes for a long time, I want to say that this type of tube is very much overrated. The price for them is approaching the price of the "Orlov" diamond and will probably be sold at Sotheby's soon.
This tube has a fundamental disease, the grids of these tubes are not covered with gold. This leads to the occurrence of thermal currents, then self-heating and failure.
Replace 6N30P with 6N6P, change the tube mode and be happy. This way you will save your wallet and not plunge your family into poverty😀
 
Take 6N6P with some letter in the name, DR/I/E/EV. The rest of the requirements are normal, preferably one year and one factory.

The 6N6P has gold-plated (you can see it with your eyes) grid and is very durable if not forced
 
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