I've found a pen in my grandma's drawer. It has a montblanc logo on the cap, the nib also has a montblanc logo and below that there's a caption that says "750" and then "18K / ct". It has a converter which says "Mont Blanc Germany". Other than these, there are no other markings or branding of any kind on it.
Can you please help me figure out which model it is?