vintage glass fountain pen in linen wrapped box

Description

I am posting items from my parents estate - they were both prolific collectors - my father collected coins, postcards, all things opera and antique tools and my mom collected finials, pillboxes, LLadro, cats, birds, and just about everything else.
Beautiful glass fountain ink pen with maker's mark on golden nib.  In original box which is covered in a linen wrapping.  I do not know age.