It looks as though you have rounded and smoothed the area on the spine that has been flattened by honing. I have seen a few razors that had wear like this, maybe a bit more aggressive, and passed on them. Does that do anything to throw off your angle when honing the blade, or can you just compensate for the lack of thickness by applying tape? I am just trying to grasp what makes a blade salvageable for use and what makes it a paperweight. Is it possible for an old blade to have so much wear on the spine that you can't hone it properly? Or am I overplotting this?