Harry L. Coit registered in 1928 this brass folded nib hiding a corrugated reservoir, intended for American shopkeepers to write elegantly their sale prices on fruits and vegetable (we bought the original leaflet at auction in 1989). More recently Arthur Baker launched a calligraphers' craze about this system in his "step-by-step" books published by Dover. The fact is that the Coit pen is stronger than the Boxall (so-called Automatic Pen) so that Hebraïc scribes often prefer it; it also allows going upwards, but its horizontal stroke is not so thin because of the folded metal. Anyway it's a very inyeresting and rare tool with 20 different sizes and shapes. Or should we say it was? The maker seems to have vanished.