The second generation of Parker Writefines came in a nice variety of colors:
The trim rings found on earlier examples have been abandoned, and the top section on these is fixed, so there's no more unscrewing them and losing the clip. Unfortunately, the top example in this picture is missing the knurled plastic piece, which is a shame (on ebay, it had a large rubber eraser over the top which hid this problem).
Barrel imprints appear either at the top opposite the clip, or as two in this picture show, just above the lower barrel section. Notice also the one second from bottom has a longer lower barrel and shorter upper barrel.
The clip on these is slightly different from the one on the earlier "striped Duofold" models, and this redesigned clip appears to have been unique to the Writefine line: