Joon New York 10 years ago had Visconti make them a very nice fountain pen to commemorate their 25th year anniversary. For many years they sold this pen at $750. They have recently discounted this pen to $300, and it is a steal at this price. I received it today in the mail and it is more striking than in the photograph. It is ebonite and sterling, and what looks like a large sterling ring by the cap threads is actually a clear acrylic window to inspect ink fill. I am friendly with the owner of a local fine pen store (Bertrom's Inkwell) who is familiar with this pen and said it is a fine pen and one of the best fine fountain pen deals out there right now. He also couldn't believe Joon held this pen 10 years before slashing the price - he said he would never hold a pen so long in inventory.
The pen comes with a water tight container about the same size as the pen that allows one to carry extra ink on a trip. The pen has a rather large ink capacity between the two reservoirs. The purpose for two reservoirs relates only to travel by air. Before your flight, you can discharge the smaller reservoir (closest to the nib) into the larger reservoir in order to prevent leakage during flight. The larger reservoir is able to do this because it does not completely fill when the pen is initially filled with ink. This design results in a smaller reservoir feeding the nib which, when it runs out, you then open the plunger (with tip down) to refill the smaller reservoir and then close the plunger.