IDenti-Pen™

Writes on virtually any surface, including glass and ceramics, rubber, leather, slick papers and resin-coated photographs. It does not smudge when varnishes are applied over the ink. It is fadeproof and waterproof and while permanent on most surfaces, it can be removed from solid, non-porous surfaces with mineral spirits. Fine-point marker on one end and an extra fine plastic tip on the other.

• From the maker of PIGMA™ Pens