I have these two sets. The stepped ones are off the November 1969 diecast I am restoring and I will be polishing them for installation. I've seen on this forum that all sandcast bikes have stepped.
The tapered ones shown take sandcast guards. They also take 1969 and probably 1970 diecast guards so at what point did Honda transition to tapered? I believe that K1 forks are completely different.
I will be selling the tapered ones as "fits 1969 and 1970 Honda CB750"....
Also, I believe there is a third type which are similar to the tapered but they have a shorter taper so they are a cross between the two. I would be interesting if someone posted up a picture of that variation for reference purposes.