Congratulation on buying av very beautiful bag! To mye knowledge the Hamiltons comes inn three sizes; the NS (north-south the lagest one), the European version ( a bit bigger than the EW with middle compartement and only sold in Europe ), and the EW ( East/west), without the middle section and smaller. I recall seeing a Hamilton mini av while back, but not recently. Then you have all the other Hamilton versions like the traveller etc, but I personally don' t consider them amongst the original Hamilton versions as they were launched not long ago.