I have yet to see any co-axial rust rats. Will stick with lever and Quartz for the time being.
I have Daniels book, and most of the HJ magazines from 1954 to around 2003. So there was a lot of ink spilled back in the day.
Henry in his last years wanted me to make an animated model of a co-axial Tourbion. The tech was a bit early for that. Then Henry and the other old guys passed away.
Now it would not be too much trouble fo make an acrylic model with a laser. I find playing with my Avatar incabloc model to be fun, So one could use that design to model the jewel pivots.
Priorities what seem interesting when one is in their mid 30s, Do not seem as important when one is in their mid 60s
Curios I never see much mention of cylinder escapements. Those were pretty popular back in the day. I took a bunch of photos of the manufacturing equipment in one of the museums. I have a whole tray of them somewhere. Also the remains of a repeater I was going to use CAD to model and restore ...