adam, thanks. would love to see the marks.
i can find NO reference of any planemaker ever using horn. if it wasn't as
tight as it is, and did't fit the dovetail with no gaps, i'd wonder if it
was replacement for boxwood or lv. either way, you're right, someone did
do a heck of a job.
after reading and looking at how cock bead planes are used, i realize the
original iron is NOT there. but it gives me the desire to forge and file
one, to get this working properly.