The Model 25 button filler was intended by Columbus to be a medium range pen, which would combine the quality of materials and finish typical of Columbus pens with a less expensive filling mecanism than the patented back spoon lever.
The 25 was a very successful model and it was produced in a very wide range of colors, including a few arco variations (red and blue), which are extremely rare.
This pen in brown caramel celluloid is very beautiful and in excellent condition. The color is still very light and near to its pristine condition.
The pen is fitted with a 14 ct Columbus F nib which is smooth and very flexible.