The contribution is assessed as superficial and partly outdated – for example, the group affiliation of brands is no longer correctly represented, since Omas at the time of publication had for some time no longer belonged to LVMH. In terms of content too, the statements on quantities and value developments are partly inaccurate. Writing instruments are as an investment object only conditionally suitable and should be acquired primarily out of collector interest. Sound information is to be found rather in specialised collector circles.