I'm not certain but I don't think that timer is from a 460. It looks like a 470 timer.

My understanding is the 460 used a rather bulky European timer (Crouzet maybe??) and the later machines used a cheaper Australian made timer, which is much more slender in shape, your photo looks like the later ones. It is possible that late 460s had the later timer, I really don't know for sure.

But maybe your machine has been made up out of several machines, including timer and wiring loom from a 470?? It's pretty common to mix and match components with these Zodiac machines.

Is the door lock wired up or disconnected? The locks do fail (often) and that may be the problem, or a faulty door lock may have been bypassed to keep the machine operating.