Today I have a very interesting lot of 4 SPORS vintage Japanese crescent fill glass nib fountain pens.  The 2 on the left function well and have such a fine writing line!  The 2 on the right need some work.  One is missing the crescent and one needs the plastic crescent ring loosened.  Only one of the pens has a pocket clip.  These are really interesting pens and I believe they were produced in the early 30's before the war.  I am selling some of my father's pen collection so please see my other auctions.  I am not a collector but will answer any questions I can.