Is one a riveted rim (kronprinz) and the other non riveted? Here's what I found from another site.
I think the Factory ordered from the three wheel makers, KPZ, Lemmerz, and Sudrad and put on what was available. In terms of preference I get more calls for people wanting Lemmerz, but for no real reason, I think it is because the logo is more elegant. The only other time I get people who want one maker over another is KPZ wheels are more exotic in terms of race, etc. The steel/alloy wheels were KPZ, as were some of the Rudge components, so some guys are KPZ all the way. But like I said I think the Factory just grabbed the next set on the shelf and loaded them on the car without much thought.