I bought a mirror glass (not for an A6!) from the USA and the wrong item arrived.
What I got was a US passenger side mirror (RH) for an A6(C6). It is heated and dimming with no signs of failure in the dimming though I can't test that.
It is convex (evenly, no separate wide-view section) and slightly tinted and has the obligatory US engraving (in black) "OBJECTS IN MIRROR ARE CLOSER THAN THEY APPEAR".
There's also some minor damage on the back - the socket for the dimming circuit has the retaining clip missing on one side and the curved "protrusion" that I think goes into a slot to provide a grip for stability has been bent very slightly (poor packaging?) but should flex back to the normal position.
Part number is 4FO 857 536 C 04S.
Is this something that would fit a UK spec car on the drivers side, and would it be worth trying to sell it? And is it the same glass for an A6 and S6?
It looks like this (not my photo) from the front:
And like this from the back (except for one missing clip as noted above):
Obviously if there's any interest I'll take pictures of the one I have. Sending it back internationally is probably not worth doing.