Just to clarify. The issue in this case is not with the sword...it is what it is. The issue is when a respected collector labels the souvenir sword as "late war". This makes our jobs much harder when trying to add validity to the concept of a post-war "souvenir." And it surprises me that Plimpton would do so. He held enough swords to know the difference between a "parade-quality" sword and one built for battle. I think to him, it was an enigma like it was to us before all of Bruce's (et al.) hard work. Remember, however, I am speaking about the entire rig and not just the blade.
But the facts are that the fittings are not made for combat. Indeed, someone of authority (I cannot remember who) said that if the handle (and presumably the fittings) is not strong, the sword is useless. Moreover, as evidence of how the Japanese felt about the quality of their weapons, the late Nick Komiya talking about the Rinjiseishiki noted:
"The printed memo further explained that the sword 'was made to be robust and practical in both blade as well as exterior fittings, based on lessons from the Incident'”.
So in my uneducated opinion, the problem is the sword's designation in the book as "late-war" and the impression that the sword was somehow made for combat rather than as a souvenir for G.I.'s.
John C.