Need Info About Montblanc Masterpiece 644 N, F4, Jb.

[rishsain]

I have a vintage MONTBLANC Masterpiece fountain pen with a 14k gold nib and a rolled gold cap. It has three markings on it's end, that read 644 N, F4 and JB. What do these markings mean? The body is kinda green and slightly transparent. I do not know much about fountain pens and would like to know the year in which it was made and the value and what the green color of the body is made of ? If i sell it how much can i get for it. It is is good condition but not in mint condition. Any info would be of great help. Thanks a lot.

[jar]

Welcome home. Pull up a stump and set a spell.

 

What you have as you know is a model 644. The green body is celluloid IIRC. The cap is rolled gold.

 

It was probably made around 1958. If it was in great shape it would likely be worth $450-550.00 US but as is more likely it would sell in the $300-$400.00 range. It's a nice model that was only made for a very short time but would probably need considerable restoration.

 

Can't help in the N, JB or F4.

[JLS1]

Rishsain, first off

 

The piston cap markings on vintage MBs are known to be pretty strange. The 644 is the model number (as Jar pointed out) while the F4 marking is probably to indicate it has a fine nib (the number may be some kind of grading, but that's a guess). The "N" after the model number and/or "JB" may be there to indicate that it's an export version, the body is striated celluloid and/or its color. The 644's barrel/body came in the usual black but also came as green, grey/platinum and (I think) red-striated versions. If your cap has "Montblanc Masterpiece" written on it it's an 'export version' (the ones that were sold in Germany have "Montblanc Meisterstuck" on the cap); one of the markings may also indicate this.

 

HTH!