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.