Hi all.I was doing the Aviation Photo Quiz over at airliners.net, and came across a photo of a 747, taken from the front, offset to the (photographers) right.The photo was very close-up, and showed the front landing gear, front-half of the left hand side of the plane and out to the inboard engines.Question was, is this a -300 or a -400.?As it turns out, it was a -300.Which brings me to my question. If you can

Different number of windows in front of the first door. 14 on the -300, 13 on the -400.http://hornet.demon.nl/photos2/20040524042.html (-300, hard to see the windows as they're covered over in a cargo conversion but they're there).http://hornet.demon.nl/photos/20030409035b.html (-400).http://www.airliners.net/open.file?id=0244043 (-200SUD which is effectively a -300).http://www.airliners.net/open.file?id=0212897 (-300).http://www.airliners.net/open.file?id=0177776 a more interesting aircraft in many respects :)Yes, it's a shameless selfplug I know :-jumpy :-rotor

Great stuff, thanks!