Alright, I purchased a pen this past weekend at the local flea market. It has a cap that says Parker around the very bottom, but the clip isn't an arrow. the body is similar to a '51 (from what i know), but there is a large brass band on the body, perhaps a home fix for cracked threads? Cap fits well. Very comfortable in the hand. Anyone have any ideas as I have none! There is no marking on the pen whatsoever, the nib is silver in color and the filling system is a bulb squeezer setup, stating Parker... Here are a couple of snaps of this odd pen. you can see the brass band on the body, PEN IN THE BACK IS THE ABOVE MENTIONED PEN... But......it cost me $1. The sack is viable and it even has a lovely bluish grey color ink in it! Best part....it writes like a dream with a wonderful line!!! Any information would be helpful and very much appreciated. (The other capless body has a really cool nib, but doubt it's a Parker and it, too, has no markings!) Thank you!