Crest holders / Sidon helmet

[Theodosius the Great]

Hello,

I'm wondering if there have been crest holders, similar to the pins used on imperial Roman helmets, found in a non-Roman, Greco-Hellenistic context.
The Sidon helmet would appear to have such a holder based on this frescoe : http://www.ancientbattles.com/thureopho ... phoros.jpg

Does anyone not think that the soldier is using a holder or pin to attach the crest ?

Thanks in advance.

~Theo

[PMBardunias]

I admit to not knowing much about roman attachments, but the horn-shaped projections on Tarantine and other Magna Grecian pilos helms are secured by a pin.