Unfortunately, based on Renee Chartrand, as far as I can tell they have the wrong plume. The only manufacturer to make the plume correctly in the centre so far was Knuckleduster. The side plumes illustrated on so many plates, and on the majority of sculpts, are based on a post war example.
Otherwise, these do appear to be excellent miniatures. They can be fixed by simply trimming off the plume. Renee Chartrand depicts them as possibly removing their plume on campaign.