I was at HKG a couple of weeks ago, when I saw an SAA 340-something. It was either a -200 or a -300. From a distance, I couldn't tell the difference between the two. Now, I've just been presented with a picture of an SAA A340-something in the Photo Quiz, and I couldn't tell which it was.
How do you tell the difference between the two, especially head-on?
I know the A342 is the "shrink," but unless I see the two of them together, I doubt I'd be able to look at one and say "that's a -200" or "that's a -300" -- any tricks?