The old plates were rated at 100 ISO instead of 640 like the instructions said to. Exposures were one second each at f 45. The slide was pulled out seven times a little each exposure. The plate was developed in Pyro for 16min instead of 13 as for contemporary film.
ISO is rated at 12 in the middle. That means the film is 5 stops slower than it was made to be.
It worked great.
A high energy developer would increase contrast.
The 8x10 print looks just like this image. It was scanned at 100 dpi and posted untouched.
Blurry image occured as a result of moving the camera.