The 25th offers the most traditional filling system, the lateral lever filling system, widely appreciated by collectors and pen connoisseurs all over the world. 

The choice of colors of this collection took inspiration from Delta’s evolution during these 25 years.

Since its creation Delta’s establishes itself with navy blue and gold as its institutional colors until 1994 when those are substituted by 2 new colors, deep black and warm orange, which have remained since.

The 25th anniversary collection includes three versions of celebration of 25 fountain pens each.  These 3 versions vary among them by the celluloid colors, the solid gold sculptures and the precious stones offered.