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One buttons -

http://i83.photobucket.com/albums/j293/Inspector_2006/watches034.jpg

that the Lemania 2 button assymetrical chronograph is at best a first cousin of the other 4, as it has a different case, different movement, however it is asymmetrical. I think the Lemania one button...

Here's another foursome -

http://i83.photobucket.com/albums/j293/Inspector_2006/Assymetrical083-1.jpg

Do you consider the Lemania 2 button assym' (with Cal. 2220?) as part of the family?