Section drawing buckle

[Latinitas]

As far as I have seen, the loop part of soldered first century buckles seems to be made from thin cast(?) metal (example) and sometimes even thin hammered metal sheet (example). The loop part of the buckle in the attached document seems to be made from solid metal but I can not see this clearly enough to be sure. In the attachement I have indicated a part of the loop with a red line. Which of the below listed section drawings is - according to your opinion - the right one? With section drawing 2 I mean a construction like this.