2011 (UTC)

I saw a C-3PO costume on display at the National Museum of American History. The Smithsonian Institution, which probably did its homework, uses an O, not a zero. I don't know whether someone could find a definitive statement from George Lucas or something he's written that could settle the issue. And for what it's worth, a Google search returns far more results for C-3PO than C-3P0.   07:03, 7 July