Chummy wing beading?

[jboy964]

Hi All, I have a conservation project under way with the Chummy at present, dealing with a bit of corrosion between the wings and body. The car did not have wing beading/piping fitted, rather a black mastic if some kind, which looked suspiciously like bitumen gutter sealant to me! My question is should a 1928 tourer have beading between the wings, running boards and body?

And while I am on the subject of corrosion, any thoughts regarding powdery aluminium? The image below shows the back lip of the car, where steel tacks have been used under the aluminium finishing strip to fix the hood to the body. Not a good idea!

   

Thanks, John