This is another treasure from The Christmas Shop in Canberra before it closed years ago. It's a matchbox style music box. You push the inside to the left to expose the key to wind it up, and push it to the right to show the scene, like this. It plays "White Christmas" and the tiny little train goes round and round. It's so beautiful. I bought another one at the same time, slightly different and gave it to someone in my family, but I can't remember who! Felicity maybe?