Marconi TF1331 Oscilloscope

[Yorkie]

Later on I had a look on ebay for ECC83s. There's strange phrases like 'Blackburn Code', 'Square Getter', 'Yellow Print' and 'Matched Pair', all of which seem to multply the prospective price by about 50.

I think the ECC83 is the best example in existence of 'audiophoolery'. A myth seems to have developed - no doubt fed by internet and e-bay, that certain versions of ECC83 have been endowed with magical qualities that set them apart from other versions. These myths, and the prices that the valves command, can only take root if gullible individuals buy into the myth and dig deep into their pockets.

No lab tests to underpin or justify this tomfoolery - just supposition.

(Rubber rings to prevent 'microphony' on EL84s? If they say so).

This current example of a used ECC83 on offer is very typical, and by no means the most expensive of many on offer:

Quote:

Used ECC83/12AT7, Halo "O" Getter with double (Goalpost) supports.
Long ribbed Anode Plates. Has a manufacture code of f91 B8b
Blackburn 1958. BUY NOW £79.00

End quote.

Oh well, I suppose it ticks all the right boxes for those with a low gullibility threshold. Might be just what you need Al to get your scope back on top form

I've just bought a Pinnacle NOS ECC83 for £3.00+£1.99 on e-bay.

Works a treat.

I don't have any equipment that warrants the purchase of exotically priced valves, and I guess I'm not alone in that.

I'm waiting delivery of four boxed NOS EABC80s, 'BUY Now' price £17.65 inc post, with a money back guarantee. I guess this description means something to someone, but it hasn't talked up the price.

1."RWN NEUHAUS" with inclined getter;
2."WF" made in the former Telefunken plant;
3."Tungsram" or "RFT" with solid foil getter and silver, nickel, chrome plate;
4."Tesla" with gray plates;