Okay, I looked at this early on and would have said a mismatch....except the buyer is ...err...not likely to make a mistake....!! So it must be of some significance. Apart from the clip the other feature that looks odd is the pencil tip ( to me at least) yet trim and wear wise looks like it's been together for a long time. I wait with interest the "story" behind this.
r
Hugh
Hi Hugh,
Don't think there is a story, and noting that any buyer can make mistakes, yes to me the clip looks like it started out life together with rest of the pencil top.
Tuckies from 1942-45 generally are clipless, so as has been noted the presence of a long clip is the anomaly. Etiology is uncertain but (as noted in my Off Catalogue Sheaffer Cap Band article in PENnant), one can pull up the usual (sometimes overlapping) list, noting some here are more likely than others (as always is true with that list): Small-run, Special order, Accident, "Lunchtime Special", Prototype, Experiment, Niche Market, etc...
regards
david