This was a postcard I bought quite some while ago. As you can see, the original is sepia but has silvering over quite a lot of it. Thankfully, most is surrounding the main image, so the simplest way to deal with it was just to do what I did with the background in Elf Children. Then I decided to give it a similar treatment by keeping the colours quite simple.
I’ve brought out the colour of their lips and the child’s eyes, but have kept the skin tones fairly similar, that keeps some of the period feel to it without losing its sense of reality.