Well that was an interesting deal. I dug one of my donor doors out and proceeded to pull the handle off.
The outside handle is held on by two screws one under the handle on the outside when you turn the handle down and one on the inside just inside the weather strip.
This was a clutch head screw before it stripped out with my brand new clutch head bit.
Inside the one next to what's left of the weather strip
With those out the shaft may be rusty or worn and the part that goes through the door may be rusted a bit but a bit of work and wiggle should get it out.
The shaft on this one is real square on the end but it gave me a fight
Had to drill the head off the screw but I am going to shave the door handles anyhow.