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RE: Can someone identify these 12AU7 tubes ?

The one on the right must be an RCA cleartop - that's a very RCA style mica spacer (like in their 12BH7 too), the 12AU7 label is in a box (though Tung-Sol also did this), and it looks like a side-getter (though hard to confirm from that pic).

The left tube I cannot nail down since I don't have experience with it, but it looks like a 70's or later vintage; possibly Sylvania.


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  • RE: Can someone identify these 12AU7 tubes ? - mulveling 16:56:15 03/08/12 (0)

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