I'd say 957. I had a brand new pair I sold awhile ago.
Use obenauf's to try and bring them back a bit. Give them a good clean first (I use lexol), then wait for a hot day, put them in a bag in the sun, let them get soft, then apply obenauf's. You'll get plenty out of them.
Why do you need to apply Obenauf's to them? Why can't you just use a standard conditioner?