What Rims do I have??

[Mad RS]

Ok. I'm going through and refurbishing my rims. I have very simular centres front and rear with slightly different markings.

Front (Silver):
Mesh centre with SSR and what looks like a "m" and a "c" joined together around the centre hub. On the rear of the centre is printed Star Formula, 505R Made In Japan, No4 Speed Star, F212

Rear (Black):
Mesh centre with SSR, m and c joined, 620kg and VIA around the centre hub. On the rear of the centre is printed Star Formula, 505R Made in Japan, No5 Speed Star, 8 21

The only differences I can find is that where the 20 points bolt through the centre lip is notched out on the Black rims and is solid on the Silver rims. Also where the writing is on the Black rims is, it is sloped from the mounting surface to the mesh and on the Silver rims the surface is notched out and mostly flat.

Does anyone know what is the exact name of these rims??

Cheers