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1970 round tube ad
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09-27-2018, 09:06 PM
bgadow
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Join Date: Oct 2003
Location: Federalsburg, MD
Posts: 5,814
There are reports that Magnavox, Montgomery Ward & perhaps Philco were still offering roundies around '69-'70. Once supply of 23v tubes caught up with demand (and it took quite a while) the market dried up for the old tube.
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