I broke the spindle on my ~100 year old door, and I'd like to just replace the spindle instead of the entire door knob assembly as this seems to be the original piece. Unfortunately I've been unable to find a 3.5" assembly that is the same as what I had. Here is a (very low-quality) picture of the original spindle, all the spindles I can find online seem to be threaded in some fashion. Is there anywhere I can order a spindle like my original one?
This Baldwin spindle is the closest I can find to what I had, but instead of having screw holes it looks like it has a pressure fit.