I guess the UK standard 15" wheel was the polished, forged type? In germany, one of the most popular option packages, "Style", had 6-spoke, fairly heavy wheels that look a bit like a snowflake and which have one-of-a-kind center caps not used on any other model. Currently ~120€ for a 4-pack on ebay.
The german Wiki has all the available types, what you likely mean is the one titled "Schmiedeleicht" (?), while mine are "Style 6-Arm" (both under "15 Zoll") so I don't think replacements for them exist. (Plus the issue of TÜV as 3d printed or simillar replacements won't have a part number
)
Unfortunately the "Style" centre caps either rot (theyre made from aluminium that oxidises when the clear laquer on it fails leading to terribe looks) or the hooks on them break so they fall off so pretty much none on the used market either if you don't want to spend hundreds on a full set of wheels..
wiki.a2-freun.de
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