@rekiwi
Not that it helps you, unless you can find some on line somewhere, but I've a set of Campag quill pedals with clips from the 1980's that have needed nothing except a clean and re-grease every couple of years. Been through quite a few straps and I believe 2 sets of toe clips on the intervening years.

@Guy That's the stuff! Thanks for the reminder. All the vintage pedals I own require cleats, which give me flashbacks of cramming my duck feet into wood-soled Italian canoes.If the SPD+platforms don't work out, I just might seek out some museum pieces.