A continental silver two-colour pencil / ruler

A continental silver two-colour pencil / ruler,
marked with a Dutch import mark,
rectangular form, the ruler measures 20cm, the ends with a pull-out red and blue pencil, the terminals with a red and blue enamelled band, plus a modern silver pencil, retailed by Asprey, engine-turned decoration, in a fitted case, initialled, and with a pencil lead holder, length of pencil 7.8cm, and a cased Mordan pencil with fluted decoration and a plain tapering dip pen. (3)