Nokia N73 Charger
When I got my Nokia N73, it came from Hong Kong. So it had an Asian charger, and in the bottom of the cardboard fedex box was an adapter for US plugs.
Having only one charger wouldn't do, so I went to Amazon and found the Nokia AC-3U, which works with the N73, N91, N80, etc. It was about $9 including shipping.
Works just fine. So if you need a US Charger for the Nokia N-Series, get an AC-3U.