First Order Stormtroopers

I took a shot of my two 1/12 scale First Order Stormtrooper models just for the heck of it. The reason I have two is because when I wanted to be able to to display my 1/12 scale Captain Phasma or Kylo Ren with two Stormtroopers in the background (like in a lot of pictures you see of them).
You wouldn't guess by looking at them, but I can actually tell which one of these is the one that I got first, and which one is the one that I got second. The one on the left is the one that I got first. What gives that away is that when I got that one, I painted a couple spots on the belt where decals would have gone, but I didn't do that with the second one. The real key difference you can't really see in this picture, but if you look at the one on the right, the right side of his belt is missing. When I got the second one, I accidentally put that piece on upside down, and the piece ended up breaking when I tried to remove it to put it on the correct way. So that's how I can tell them apart.