If it's the trim on the sides - we used to call it the "Flash" trim, it was made in AUS, but only for the "wide molding" cars, like pre 68' models. It matched the size / shape of the existing belt line but used local clips etc. It was stainless steel. Someone has reproduced it - might be worth looking on www.aussieveedubbers.com
thought I might post that pic of my 1963 VeeDub.... show you what the flash looks like. The actual flash was anodised aluminium but the trim was stainless.