I took a better look this evening. Those look very similar to alpinas and would be a great alternative to anyone that doesn't want to spend $1600+ on 14" wheels. I had good luck painting the centers of my late model real
Alpinas black if you want to give it a try. You can also plastidip the centers for under $10 if you want to experiment on the vintage look. You can also plastidip the oz caps black and put on a $10 set of Alpina stickers and they will look *very close to the real thing. If you aren't familiar with plastidip, it is a removable paint that is essentially a thin rubber coating. If you ever saw the movie "The Jackal" with Bruce Willis, he uses this type of paint before it went mainstream. Wheels are one of the most common applications.
If you look at my FS thread I sold my oz wheels for $300. Mine were essentially clones of bbs mahle wheels. $300 seems to be a magic number for most one piece 14" wheels. I think yours could easily command double that if you prepped them accordingly. One would be hard pressed to replicate the look for any less.
In my opinion the timing is right. Excluding a few bbs/Alpina applications, many E28 owners have migrated away from 17"+ wheels, and favor 14,15,16" varieties. Your *current market exceeds the e9 crowd. With that said, I'd probably want to keep them. I am not parting with my 14x6 FPS derivatives.