Good news: I finally cleaned the helmet!
Bad news: I ran out of white wine vinegar, so I couldn’t make it as clean as possible
Better news: I ordered some Brasso wadding as recommended by numerous armor polishing tutorials. For those who don’t know what that is, it’s like a special material used for polishing metals. This means my helmet is going to look drop-dead gorgeous when I use it.
I’ll keep you all posted. Until then, praise the sun!