Montblanc - 334 1/2 rare wartime model - Pen

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