Double breasted or center fastening?

[Giannis K. Hoplite]

Only,this raised chest cover can be achieved also with overlapping. The belly part would be double and the chest would only be one layer.
I have been thinking about this vase a lot also,but i have to say none of these explanations make much sense to me.
A cuirass whose chest part covers partly the shoulders is the Patroclos' one from the famous vase. Only it looks nothing like this one.
:roll: