Originally Posted by BABuckeye
Polo I - single vent, 2 button (full, traditional cut)
Polo II - double vent, 3 button (traditional cut, but 3 button and side vents can make it look slimmer than Polo I)
Polo III - double vent, 2 button, ticket pocket
Polo IV - double vent, 3 button, ticket pocket (slightly higher arm holes, so feels trimmer about the chest)
Polo I-IV suits generally have pleated pants (traditional Dalton model)Warning: Spoiler! (Click to show)
Hacking (jacket) - side vents, 3 button, like Polo II, but with angled pockets and ticket pocket. Some would call it a [horse] riding jacket.
Princeton (jacket) - single vent, 3 button, somewhat boxy, usually with patch pockets
Purple Label - may be 2 or 3 button model, whichever, it is slightly trimmer than Blue Label (Polo I-IV), and suit pants slimmer fitting.
Black Label - trimmest fitting, usually smaller slimmer lapel too, low rise and very slim fitting pants.
Bleeker - usually 3 button, single vent; slimmer fitting (in both chest and arms), shorter in length for similar sized coats; suits with flat front pants, slim fitting and tapered.
Congressman - similar to bleeker, though not sure whether pants are as slim fitting; seems to be sold at dept stores (like Macy's suit dept) rather than Polo stores.
All the above items retail for over $1000. If something retailed for $595 or $695, it was generally sold at a dept store. These jackets usually unlined, and sometimes sized with S,M,L,XL.
Regent - flat front, traditional fit through hips, thighs, legs, 18 inch leg opening.
Dalton - pleated front (Forward pleats, I think), full through thighs and legs.
Madison - flat front pants, (from purple label line, I think), about 2 inches slimmer through legs, sits slightly lower on hips, 16 inch leg opening. (if you run, bike, or for any other reason have muscular calf, these pants will hug tightly and look as bad as a tight shirt wrapped around a not so tight belly, with the button on the verge of popping.