the rails are fine. If they look bent in the photos they are not. The foam is complete and good condition except the missing part on the one corner. Sculpting is what i envision as well. If i could use a piece of cardboard as a backer i could use some kind of two part epoxy to span the broken section. Then use bondo to sculpt the contour the same as the good side. Once satisfied with that, put the original foam back on, find a scrap piece of foam for the missing section, and recover with 1mm goatskin. Dye. And install. Not sure if that is realistic.

I was totally speaking from my own perspective. If you want to try it, go for it. To my eyes it looks like a big challenge, especially if it’s going to be ridden. If it’s just for display that’s a different matter.
Re the rails, sure they are straight, but pretty rusty, which for me would just be one more reason to find another saddle.
I have had pretty limited success with epoxy on plastic, even when the package says it’s for plastic. And if it’s being ridden, it’s undergoing all sorts of minor torsion pretty much constantly, so you would really need a good bond.
As for the foam, I have found it pretty hard to match the density and firmness of saddle foam, and certainly getting a seamless transition won’t be easy.
Again, not trying to talk you out of trying, just offering some observations that would lead me in a different route. YMMV.

i have an nos red one on order now. Once it arrives i may take this old one apart and see what i can do if anything. I dont have high hopes but its worth a try.

i got the nos red/orange saddle today. I put several doses of black leather dye. It is a suede texture. Its real leather but suede finish. Do you think i should use the shoe polish? Will it get semi glossy?

This lady does amazing saddle repair. She is in Belgium I believe though.

shoe polish on dyed suede? Don't like the sound of that! If i was to use anything to try to "seal" the dye on a suede leather I guess maybe Fiebings leather saddle-lac or a "harder" paste wax than shoe polish. Something with a higher melting point that has some carnuba wax content...maybe...it's all an experiment at this point!
Tip: wear black shorts for the first several rides to see what happens!

oh thank you!

I agree about the quality and creativity! But you need to change your gender assignment. Go to the website and read about the "Team."

Probably would have been a lot better off with this:

Angelus Black Leather Paint

thats good to know for future projects. I went the old school route and couldnt be happier.

Didn't see that picture. So now I'm a bit confused.

I went ahead a dyed the nos orange one black with Fieblings leather dye. I put 4 coats on letting it dry an hour in between coats. I let it dry overnight, wiped the excess residue off and applied Kiwi black shoe polish and buffed to a shine. I couldnt be more pleased. Im surprised it turned out this good. It was not a true suede after al, but it did have a texture like 600 wet sandpaper. Now its smooth, glossy and waterproof.

Couldnt be happier with it.

Perfecto!

Fiebling leather dye and Kiwi shoe polish. Standard shoe polishing protocol. Turned out flawless.

Mint. Never mounted. Virgin. Waiting for me since the 1980s.

Nos from the Netherlands, wrong color, $165 to my door, 2 weeks waiting, totally worth it.

I thought about restoring it.

Im glad I decided not to and I appreciate the support from 79 on recoloring the nos one.