I'm not so sure you can say something is 'not Viking'. After all, the Vikings were not an ethnic designation. There are examples of richly decorated, and old, helmets around during the mid 9th century. For example, the Coppergate helmet is reckoned to be older, by a good 100 years, than the pit it was buried in. It has been interpreted as a helmet that was being repaired, then buried during the Viking activity in the are in the mid 9th century.Grimr Hvitulfsson Ulfhamr wrote:I can't see all the details on my crappy monitor, so I cannot comment on everything. However, in the front row the second guy from the left is not wearing a viking helmet. It looks more like a Vendel helmet, which is Scandinavian but a couple of centuries older.
Given the richness of the Valsgarde/Vendel helmets, and their connection with the elite, I think its plausible that Viking leaders had helmets at least as richly decorated as those Valsgadre/Vendel examples. As you know, Viking was not a ethnic term.
On the other hand there is a bit of evidence that the most of the 'great army' had been living in northern Belgium for almost 25 years prior to coming to the Islands of Britain, so they may have looked much more 'generic' European in their appearance than has been supposed!