Here they are, as found.
5 minutes on the stones brought back the round iron to working sharpness (400 - 1000 - 4000 - 8000, CrO strop).
I then cleaned up and oiled the plane body, buffed it and took it for a test drive.
Cleaning up the panel-raising plane was pretty much the same work... clean up the contact point between the iron and the chip breaker, flatten the back and bring the bevel up to 8000 grits on the stone, followed up with a quick trip to a CrO strop.
I still need to make a replacement nicker and a replacement wedge for the nicker. I have seen two design variations so far... the nicker perpendicular to the planing direction and the nicker parallel to the planing direction. Interestingly enough, the channel for the nicker seems to have been done with a drill as two sides are parallel and the other two sides are rounded. This probably means that the nicker was a later addition to the plane.
This is now my second large panel-raising plane, both with a flat profile but a different slope angle.
The left one has a Ward iron, the hardest plane iron I own so far, skewed with a sharp angled arris on the work side. The right one is the new one