Valvo
| Brand on Tube | Valvo |
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| Country | Germany |
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| Etched code on Tube | k62 D6F |
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| Factory Code | D - Valvo, Hamburg |
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| Year | 1956 |
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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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| Plate Look | Ribbed / Scale |
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| Plate Size | 17mm |
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| Plate Color | Matte Gray |
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| Pin Color | Silver |
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