Is it a round section belt?
If you type “Zanussi fan belt” into Connect’s search box, it comes up with two round belts and one small polyvee; although they’re for later models. I’ve got a TC470 one somewhere in my museum vaults.
Ah, here’s Igor with it now.
Hmm. (measuring).
It’s about 68cm long. And about 5mm diameter.
Mike.