I challenge you Google-nauts to find me a famous image.
It is a figure of a knight, carved onto a sarcophogus lid. I *think* it may be in the St-Martin-in-the-Fields church. My friend's mother went to England and did a rubbing of it. Apparently it's a big tourist thing.
I know it is a simple 2d image, just etched. Otherwise doing a rubbing would be ... challenging.