Antique Sound Lab 6550 Tubes - made by ? - Steve M.

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Antique Sound Lab 6550 Tubes - made by ?

I picked up this quad of 6550 tubes in a lot recently that are labeled by Antique Sound Lab for one of their amps. I thought they might be Shuguang, but they do not have metal bases. Are these another version by Shuguang? Or, does anyone know where ASL sourced their tubes?

Thanks,
Steve M.

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Topic - Antique Sound Lab 6550 Tubes - made by ? - Steve M. 07:22:29 05/26/20 (6)

RE: Antique Sound Lab 6550 Tubes - made by ? - kmolles 16:37:56 06/03/20 (0)

RE: Antique Sound Lab 6550 Tubes - made by ? - Steve M. 07:58:03 05/27/20 (1)

RE: Antique Sound Lab 6550 Tubes - made by ? - Blackdog 16:45:54 05/27/20 (0)

RE: Antique Sound Lab 6550 Tubes - made by ? - Blackdog 04:21:32 05/27/20 (0)

RE: Antique Sound Lab 6550 Tubes - made by ? - Story 15:16:27 05/26/20 (0)

RE: Antique Sound Lab 6550 Tubes - made by ? - Tre' 15:07:24 05/26/20 (0)

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