I disagree

I think replacing the brass fittings (and of course the plum holder

) would give it back its original countenance. And in case that the amount of replacements disturbs, they can be removed without a trace. But that of course is subjective (and a lot of work).
If I oil it, is there any risk that the oil undermines the delaminated areas an increase delamination?
What do you think how to date the helmet? It was found in Bavaria - would this fit its origin?
Cheers
Andreas
Update: I just found the copy of a book page in Fernando´s thread #7 here:
http://www.vikingsword.com/vb/showth...light=cabasset Looking at this I think mine corresponds No 9 which is dated 1st half 16th century. Can it really be so early?