These 4 rims are extremely rare, they come from the BMW 3.0 CSL B2S
n°4 ALPINA 4×100 centers wheel hub that could be used to build 14″, 15″ street wheels using custom halves or could be used with the current 13″ racing halves.
n°4 halves marked #11 (front wheel)
n°2 halves marked #12 (rear wheel)
n°2 halves marked #13 (rear wheel)