Omas arco green cellulloid ht trim - fountain pen. Fp nib special 52 18k. Condition nos (new old stock). Complete (with outer box, box & papers). Omas has presented another addition to their long line of fountain pens. This pen features the fit and finish of the fine italian quality that has made omas a worldwide name in fine writing instruments. The high tech trim compliments the green-silver celluloid in a way that is very visually appealing. This style of pen, with the lightweight celluloid and subtle trims, is an excellent user-grade pen. The green arco celluloid fountain pen presents class and taste, and a visual delight to all those who take a minute to look at the way the celluloid shines, and in the different light angles the sheen of the pen really pops.