the elements being secured or adapted to be secured by means of pins and holes

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Signs, name or number plates, letters, numerals, or symbols (vehicle registration number plates B60R13/10); Panels or boards (show-cards G09F1/00; indicating arrangements for variable information G09F9/00, G09F11/00; illuminated signs G09F13/00; boards for notices or posters G09F15/00) > Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols > the elements being secured or adapted to be secured by means of pins and holes