They don't use SPD cleats. I had a couple pairs of these back in the day. I dunno if they're worth saving - even if you find cleats you'll eventually need new elastomers. Those are going to be at least twice as hard to find as the cleats.
No need for a model name/number anyhow. They only made one style that I'm aware of. They had models with both CroMo axles and Ti axles, but the bodies, elastomers, cleats, etc. were all the same.