Mullard
| Brand on Tube | Mullard |
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| Country | Great Britain |
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| Etched code on Tube | 9r1 B9L |
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| Factory Code | B - Mullard, Blackburn |
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| Year | 1959 |
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| Tip Shape | Pinched Tip |
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| Glass Color | Clear Glass |
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| Mica | Double |
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| Getter | D-Getter |
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| Plate Look | Mesh |
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| Plate Size | 17mm |
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| Pin Color | Silver Pins |
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| Base | Coin Base |
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