I picked up a Waterman for $12 amongst some clutter at an antique shop. I already mailed it for a rehab before I thought to take a photo first, but please see if my description helps.
I'd estimate it is from the late 30s to early 50s. The nib is small, gold and had "Waterman" on it. I dipped it and it was okay, but not stellar. The barrel and cap were flat at the ends and made of blue and pearl strips formed into sort of a deep-V herringbone pattern. It has a silver-colored clip with no lettering, but with curved ridges. The black jewel on top is recessed with circular ridges, while the black jewel on the bottom is flat.
Fred