This is a cropped version of a real photo postcard, printed on Artura stock that was made between 1910 and 1924. The image was very faded with moderate spotting and scratches.
A couple of things: I have heavily kicked up the contrast and the sharpness. I brightened the light reflections in the kids’ eyes, but I can’t correct the problem with the left kid’s left leg, as you view him. Notice that it looks like his leg ends before it even gets to the shoe. I enlarged it and it appears to be a lens aberration or a case of poor processing. Maybe he didn’t have a leg there…who knows?