Check These oot, Min! New helmets from E. Konig!!

[Marcus Mummius]

the answer on side plumes is that it did not have any.

That's interesting to hear. Perhaps elements from different Gallic D helmets, including the Weisenau 369 helmet got mixed up when replica's where made?

This copy of a Gallic D, picture from the RAT Helmet Database, is often used as a model for the Weisenau 369, but it isn't the same helmet:

Vale,