I set of four Rover 75 centre caps DTC10054XXX, sparkle silver these will fit 16” Unions, amongst other wheels.
These have been cleaned as you can see from the before & after photos below 54mm diameter.
before
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2
after as you can see the face of the centres were quite clean anyways, just the rear that needed a brush up
3
4
5
I am asking £00.0 including the P&P first to pay will own them cheers Arctic.