Mullard
Brand on Tube | Mullard |
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Etched code on Tube | fX1 B7K |
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Factory Code | B - Mullard, Blackburn |
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Year | 1957 |
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Bottle Height | Short |
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Tip Shape | Round Tip |
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Glass Color | Clear Glass |
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Mica | Double |
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Plate Color | Matte Gray |
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Pin Color | Silver Pins |
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Base | Brown |
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