Originally Posted by
Euclid440
Is that rust on the bevel or ink, the spots? What does the other side look like?
A photo of the razor without your thumb on the heel, on both sides would help.
You can easily set a bevel on a Norton 4k, but the razor may have issues. What those issues are, will determine how to hone it. The condition of the spine and edge may tell the tail.
More than likely there is some warp in the blade, set it on a flat surface on both sides and see the condition.
Colored ink is easier to see, and will not be confused with a shadow or rust mark.
Use 2 layers of tape, to set the bevel, then once set, drop down to one layer. But first post some better photos so we might figure out what is going on.
What you should do, depends, if you just want to shave, send it out for honing. If you want to learn to hone, post some photos and we can get you over the hump. If you can find a local mentor, you will cut your learning curve dramatically.