Museums don't operate objects that are 200 years old, so it doesn't really matter. But also, it's not like a mechanical watch is going to work for 200 years wi

Museums don't operate objects that are 200 years old, so it doesn't really matter. But also, it's not like a mechanical watch is going to work for 200 years without maintenance and repair either. Lubrication, springs, bearings... these all degrade over time.