Only 888 were ever made. Stone: Natural FANCY YELLOW DIAMONDS. Gram Weight: 77.2 Grams. Montblanc Patron of the Art Edition 2003 Copernicus 888 Fountain pen. Powered by SixBit's eCommerce Solution.The item "Montblanc Copernicus 18k White Gold FANCY YELLOW Diamond 888 Pen RARE & BOX" is in sale since Sunday, August 12, 2018. This item is in the category "Jewelry & Watches\Fine Jewelry\Other Fine Jewelry". The seller is "oldtreasures333" and is located in American Fork, Utah. This item can be shipped worldwide.