This is another deep dished 380 mm Prototipo prototype from a CSL
That is more shallow and less holes than the only prototype that I am familiar with. Any 380mm prototipo is hens teeth, especially one with that shape.
This is the first CSL brochure with a non-factory momo. You know the pic, as I posted it in your personal-based prototipo wheel thread. Side note, these also aren’t production scheels. They are earlier lighter racing scheels. Hence the distinctive shape.