There are pens that are very special. The Otto Hutt designC is definitely one of them. Not only because there are only 500 of them worldwide. Thankfully, there was the chance to take a closer look at this fountain pen and test it. The Otto Hutt company is celebrating its 100th anniversary this year. They have designed a special fountain pen for it. To be more precise, they teamed up with the designer Mark Braun…