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EL503 tube

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How much is this tube worth ?
If i remember correctly, i've seen it for an excess of 150 dollars used on ebay.

Few pics:
 

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I recalled this tube being an output tube very similar to the EL84, there was an amp I was looking at buying once that used them....they apper to be unobtainium...

Problem is, unless someone has one or three others this would match to, the value of a lone tube goes down...i am sure a pair or quad would be quite valuable.

I should clarify about eBay...i believe the prices some people list for Buy it Now prices are a poor indicator of market price...on the other hand, putting it up for auction with a reasonable entry price is an excellnt way to get the market price, eBay is probably the best place to sell this stuff on auction...lots of exposure.

Good luck with it....
 
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