Fits onto any Platinum cartridge/converter pen. Platinum piston converter allowing bottled ink to be used with Platinum fountain pens. Century 3776 and more. Product Code Plat-Converter-700. ... Goulet Pens gift cards are available for $5 to $500. Platinum Converter สี Black Gold CON-500 และ Black silver CON-700 ช้อป Platinum ConverterCON-500, CON700 Learn. This silver-accented converter turns your Platinum cartridge pen into a plunger fountain pen. Platinum's ink converter hasn't changed in forever, but I am truly surprised how well this one is constructed. Content of converter - 0.53cc CONVERTER-500 Ink converter for Platinum fountain pen, ie. Gold trim to match fountain pens with gold trim. Considering the fact that I have no chose, I … In Stock . For an ink converter, it is a bit expensive, but I don't know of any other ink converter that will fit Platinum's pens. Platinum. Platinum Converter 500. 32. out of stock. Usually Ships in 2 to 3 Business Days. $14 99 $14.99; Or 6 payments from $2.49 What's this? Twist style.