![1950s MONTBLANC Masterpiece/Meisterstuck Celluloid 142 KM Kugel/Ball Medium Super Flexible Nib Telescopic Piston Fountain Pen Fountain Pen Nib Sizes KM EEF BB BBB OB OBB OM HEF KEF KF DF DEF SB 1950s MONTBLANC Masterpiece/Meisterstuck Celluloid 142 KM Kugel/Ball Medium Super Flexible Nib Telescopic Piston Fountain Pen Fountain Pen Nib Sizes KM EEF BB BBB OB OBB OM HEF KEF KF DF DEF SB](https://www.protopens.com/media/catalog/product/cache/1/thumbnail/545b7d8c2961a2f8e0ee77da01d7b56a/d/s/dsc_0598_2.jpg)
1950s MONTBLANC Masterpiece/Meisterstuck Celluloid 142 KM Kugel/Ball Medium Super Flexible Nib Telescopic Piston Fountain Pen Fountain Pen Nib Sizes KM EEF BB BBB OB OBB OM HEF KEF KF DF DEF SB
![MONTBLANC: No. 644-N Masterpiece Piston-Filler Fountain Pen, Rolled Gold Cap - Price Estimate: $80 - $120 MONTBLANC: No. 644-N Masterpiece Piston-Filler Fountain Pen, Rolled Gold Cap - Price Estimate: $80 - $120](https://www.pbagalleries.com/images/lot/2721/272124_0.jpg)
MONTBLANC: No. 644-N Masterpiece Piston-Filler Fountain Pen, Rolled Gold Cap - Price Estimate: $80 - $120
![Montblanc Masterpiece 142 Füllfederhalter - Edle Schreibgeräte und Accessoires 2019/04/29 - Starting bid: EUR 220 - Dorotheum Montblanc Masterpiece 142 Füllfederhalter - Edle Schreibgeräte und Accessoires 2019/04/29 - Starting bid: EUR 220 - Dorotheum](https://www.dorotheum.com/fileadmin/lot-images/10P190429/normal/montblanc-masterpiece-142-fuellfederhalter-6157539.jpg)