original sound deadening panels

[moasew]

I have a couple of questions(not that this matters in the big scheme of things) but just curious.

Upon removing the interior from my Early 28 Tudor (Canadian) I found these original deadening panels for the rear of the "A".

Attached are photos of them placed exactly where they would've been on the car. The glue still left on the car(photos attached as well) is easy to determine the placement of such including the ones with half a hole cut out of two of the pieces. The glue clearly shows only one piece on each corner with the half hole cut out was used. The adjacent piece was solid.

Two questions I have is why would Henry use this shape for the panels? I first thought it was to help them shape to the corner of the car better but then they were also used on the flat services. And second what was the purpose of this half hole? I see the repos are just rectangular pads which makes sense. It's almost an allowance for some side light in the rear corner.

The door and side panels were just square/rectangular.

Just wondering if any of you came across this before in your restoration experiences?