The easy way to tell the difference between this and the second English edition is to check whether there is a Mayfair logo on the front of the box in the lower right.

There were gameplay, components, and rules changes between the editions. For more information, see [url=http://www.boardgamegeek.com/thread/252015/2nd-ed-vs-1st-ed-rule-changes-outcomes-thoughts-]this tread[/url].