I've been looking for the same for my Deauville. One is broken, and I agree they aren't the prettiest mirrors.
Watching cars on the street for a couple of years, I've found those on the Audi 80 to be the best donator so far. Those on the late and/or more expensive models are painted. Many new cars now has doorskin-mounted mirrors, but they usually are very big.
Please let me know what you think. I haven't bought or tried any yet.
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