It depends on its condition. If it’s in top shape it would be worth advertising it through one of the enthusiast type classified magazines, or even a classic car auction. If it’s not up to scratch trade it in, put a ‘For Sale’ sign on it and park it in prominent places. You could also advertise it on sites like Carsguide.

I'm afraid I take a conservative approach, so I would change the belt as Honda recommends. The belts do deteriorate as they age -- it's not just a question of mileage -- and the engine will sustain expensive damage if it breaks. Same goes for the Toyota. It should really be changed after about five years to avoid potentially expensive damage to the engine internals.