This is a continuation of the "is it isn't it a genuine Alpina wheel".So to summerise what I have found out after extensive research considering ONLY 14x7 spoked wheels for older BMWs. It is a given that the original colour is polaris and the centre satin black. It is not unusual for the black to extend by a few mm onto the front face of the wheel
1st generation. only 5 mounting holes. Alpina in raised lettering on the front face. Not made by Ronal.
2nd generation. 5 mounting holes plus 5 extra smaller holes. Alpina in raised lettering. Made by Ronal.
3rd generation. Ditto Ditto. FPS in raised lettering.
4th generation. Ditto. Ditto. Ditto. PLUS Alpina engraved on face.
5th generation. Ditto. Ditto. FPS raised lettering. Ridged spokes
6th generation. Ditto. Ditto. Alpina in raised lettering. Not made by Ronal.
It seems clear that the second generation is considered the "correct classic e9" wheel (shod with 195/70 XWX!)
There are subtle differences in design (and colour) between all the different generations of wheel, the most obvious being the fifth gen ones with the ridged spokes which went on to much later models. The current ones available from W&N are the 6th gen mentioned above. I cant remember who makes them but I suspect it is BBS. Confirmed below BBS is the maker!
The value of each generation depends of course on condition, but if we assume a base line of excellent condition straight and unbuckled, then gen 2 are the most valuable, gen 5 the least. As with all things any item is worth what someone will pay for it. The prices asked seem to vary, and of course they do not come to the market often. A straw pole shows the US appears to be the highest, UK next and Europe the lowest. Of course the shipping costs are a very considerable extra if the wheels have to travel over water so although a set in the US is an OK price, by the time the shipping and the exchange rate are factored in the deal becomes a non starter.
What price originality?
The "system" has editted my post to remove the intended spaces between the ditto. Sorry.