Montblanc Slim Line Fountain Pen. Fountain Pen (Cartridge Filling System). This is a vintage Montblanc Slim Line fountain pen.It has a steel nib, the size is EF, works well. But has some minor wears due to age. Registered Air Small Packet or EMS/DHL from Japan Depends on the country. International Buyers - Please Note. ·We do not mark merchandise values below value or mark items as "gifts" - US and International government regulations prohibit such behavior. This item is in the category "Collectibles\Pens & Writing Instruments\Pens\Fountain Pens\Montblanc". The seller is "kumastar" and is located in this country: JP. This item can be shipped worldwide.