u/ilikepinappleonpizza

So I found these historical depictions of armor and thought it looked quite good and I want to make a harness of it but I cannot figure out the name of the helmet i belive it to be a type of german kettle helmet tho I could be wrong and my own research has left me with more questions then answers. Also if you know anything else about it and the armor in general I would be much appreciated, especially is you know of somehwere to buy it. All I know for certain is the armor looks to be kastenbrust in majority of the illustrations so I believe that puts the time period in the early to mid 15th century, tho I may be wrong.

So I saw this painting a while ago and noticed one of them in the back on the English side looks to be wearing some sort of either early sallet or maybe an kettle helmet with a visor, aswell as I believe to be a brigandine with a gold velvet or some other type of fabric. if you know anything about the helmet the armour and the style it would be greatly appreciated.