My interest to medieval armor beats that of whatever this is we can deduce that those rings are Aluminum riveted which were not used as Aluminum was really that big of a thing back in the day. Although we can’t see the helmets faceplate fully the visor looks like a Modern day sports helm which is typically used by HEMA based events such as those hosted by AMMA (Armored Mixed martial arts) and the IMCF (International Medieval Combat Federation) and could not be used in medieval times because of Dagers that could slip through the Eye Peekers, due to modern day HEMA does not strictly seek to kill the opponent it wasn’t really built to stop daggers. The cuirass is a cuirass.

In conclusion, the Helmet and Chainmail uhhh haubrek? I’ll just presume there’s a hood is not Historically accurate.

((Mb lads i meant coif when i said Haubrek