Comparing to the original armor of mine, the sled armor looks good from the pictures shown. I would guess it's the real thing, there should be a little "key" that fits through the slot to lock it in place below the axel, that on mine was just a "T" shaped cut out piece of metal, like of some left over armor plate, and with a hole drilled in it for a cotter pin on the long part of the "T" to lock it on the sled. About as complicated as a club.
The jacket armor I am less certain of, but it looks good- I'm just really not sure on it. The only reason I voted it was original was the pointed rivets holding it all together, I'm not sure the repros have that. There are many repros out there, I just don't think they're this style, and this is one that I've seen a lot in pictures, so I'm going to go with it's original.
Pretty good paint! Whereever did you find lead paint???
Looks like neat stuff!
And no, the armor wasn't always proofed, or marked as to maker, and I really couldn't tell you why. Most of them I've seen are not.
Glen