the montefortino helmet was the standard Roman legionnaire helmet from 3rd-1st century B.C., until it was replaced by the Coolus type. Plumes and horsehair could be inserted to identify rank, kind of soldier (hastati,princeps,...). The only thing to do now is just place a small neck guard, and then try to make a mold. The plume is made of parts from the medium and triple lego plumes.
this is something that needs to be made by you, or brickforge, or someone in mass production Lego and all the customizers make just imperial helmets, which we are grateful for, but nothing is easily used to represent these early republican roman army helmets. nice work. 7 years later how did the mold work out?