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Melz 1578 (6SN7)

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pstrisik

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Melz 1578 (6SN7)
« on: 20 Mar 2025, 12:38 pm »
Anyone know what these are?  They are not the typically seen Melz with the perforations.  Thanks


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FullRangeMan

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Re: Melz 1578 (6SN7)
« Reply #1 on: 20 Mar 2025, 02:09 pm »
There is a Melz version not perforated.
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rotarius

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Re: Melz 1578 (6SN7)
« Reply #2 on: 20 Mar 2025, 03:19 pm »
This appears to be a Beijing Chinese military 6sn7 that has been stamped 1578 to make them more valuable.  The plate structure, spacers and bases appear to be identical to the Chinese ones that I have from 70s-80s.  Nice tube but worth about 10 bucks.
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pstrisik

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Re: Melz 1578 (6SN7)
« Reply #3 on: 20 Mar 2025, 04:21 pm »
Thanks.  I suspect it isn't genuine or wouldn't be so pristine for not a lot of money!
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DaveC113

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Re: Melz 1578 (6SN7)
« Reply #4 on: 20 Mar 2025, 04:33 pm »
Agreed they're not genuine. I have a bunch of these and they come grey and black, holey and solid plates.
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