It is nearly impossible to tell if the Esterbrook Transition pen is an authentic one or a repairman's marriage. We aren't sure, ourselves, but this pen does have a rarer cap with a three-banded black "jewel" on top and no "Esterbrook" written in the clip. We restored it with a new ink sac and new 1461 steel nib. Our vintage pen has some wear from use, but there are no cracks. The clip has a little jiggle, but it doesn't spin. You will write an extra-fine to fine line that is surprisingly smooth for a 1000-series nib. Mind you, that there is still a little feedback, but this isn't a bad nib by any means. 12.6cm capped.