MONTBLANC 334 1/2 wartime model (circa 1940s) is a rare vintage piston-filler fountain pen made of black celluloid, characterized by its lack of cap rings and fitted with a steel nib due to wartime materials restrictions. here is with original steel nib size 4 1/2 Oblique Bold flex piston filler,well working barrel and cap made of black celluloid, amber ink window very good imprint Montblanc with the mountain logo on the cap imprint near the blind cap "D.R.P. 652405" imprint on the blind cap "334 1/2 - OB " gold plated clip year production 1940c. Made in Germany long 124 mm capped long 154mm posted Excellent condition Restored and revised with a new cork seal ,in great working condition