I agree with everything mentioned before, from "wow" to "award quality".
Pretty long stem, isn't it? Would it hold this huge flower or need some staking? That stem's another plus for breeding anyway, apart from the obvious size, shape, colour,...
This is arguably the finest white ever produced, and this particular plant must rank with the best of the bunch. A solid 77 point HCC here in the Bay Area (insert emoticon for irony here)!