Here's my question to you. What's the difference between "square" and "tonneau". I always thougt that a tonneau shape was like this Auguste Reymond Dixieland (picture from the net)


A recent purchase however made me doubt. This Kemmner is being sold by Roland Kemmner as a tonneau. I would call it square like this other recent purchase (Hamilton Jazzmaster Square)



And then the is this older Seamaster, what's what :?:


Overall picture


OK, it's not a question to stay awake over all night :mrgreen: , but nevertheless I would like your opinions

Regards,
Marten