[I guess the word "utsushi" wasn't in the vocabulary of these early collectors?]
From "Ornamental Ats of Japan" 1884 by George Ashdown Audsley - "Although we have in the course of our studies, examined thousands of guards, we do not remember ever to have seen two exactly alike"
From "The Scottish Arts Review Vol 1 Japanese sword-guards" by J. P. MacGillivray 1888-89 - "From the variety of designs it would almost seem a first principle with makers of sword-guards in Japan that there should be no two alike. There is nothing characteristic of wholesale manufacture about them."
Wow how things have changed!