According to the article where I found the photos, it had two sets of wheels of differing sizes to give two different final drive ratios, and Dunlop tyres. My guess would be only one set had the wheel-discs, presumably the set that was found most useful for long-distance record breaking.
The car existed and was driven publically from 1933-37 which explains the various different detail differences in all the pictures we've seen here so far, I assume bits were tweaked here and there as they went along.