Can you help me with Bugle Boy date codes

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  • michaeljhsda2
    michaeljhsda2 Posts: 2,200
    edited June 2011
    H9,
    I noticed what looks like an "H" or an "I" just below the "A" on the bottom of the Mullard tube...or could it be where a pin would have gone? Could there be a secondary mark in that spot?
    michaeljhsda2 wrote: »

    BugleBoy2.jpg
    SDA SRS 2.3TL's
    Silk Audio MS-90-BT integrated tube amp
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    SDA 2B TL's
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