The main corrugated aircraft sections I am aware of are – the wings above the fuel tanks of a P38, the wings of a B17 – the wings of the Whitley and the Ju52.

The wing section I had before from a B17 had a rounder profile and was heavier.

The square profile is more (I think) like that of the Whitley. I am sure Elliot will confirm.

P.S. rivet holes are 4 and 2.5 mm dia.