u/HatsuneMikuCS

So i brought this old safe box thingy, it's battered and bruised but I thought it'd be neat to do up and keep for fun, it's at least a good good few years old the owner said, couldn't give an exact, but there's this weird locking mechanism on the bottom drawer, anyone know what this is, I got the keys for it (as shown in the video) but it does this weird ticking/auto turning mechanism it's weird, I'm wondering if anyone can help me identify and find a replacement or maybe a fix for it?